20978100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:207

約数の個数: 216

約数和(自身を含む): 77724192

約数和(自身を除く): 56746092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 25, 26, 30, 33, 36, 39, 44, 45, 50, 52, 55, 60, 65, 66, 75, 78, 90, 99, 100, 110, 117, 130, 132, 143, 150, 156, 163, 165, 180, 195, 198, 220, 225, 234, 260, 275, 286, 300, 325, 326, 330, 390, 396, 429, 450, 468, 489, 495, 550, 572, 585, 650, 652, 660, 715, 780, 815, 825, 858, 900, 975, 978, 990, 1100, 1170, 1287, 1300, 1430, 1467, 1630, 1650, 1716, 1793, 1950, 1956, 1980, 2119, 2145, 2340, 2445, 2475, 2574, 2860, 2925, 2934, 3260, 3300, 3575, 3586, 3900, 4075, 4238, 4290, 4890, 4950, 5148, 5379, 5850, 5868, 6357, 6435, 7150, 7172, 7335, 8150, 8476, 8580, 8965, 9780, 9900, 10595, 10725, 10758, 11700, 12225, 12714, 12870, 14300, 14670, 16137, 16300, 17930, 19071, 21190, 21450, 21516, 23309, 24450, 25428, 25740, 26895, 29340, 31785, 32175, 32274, 35860, 36675, 38142, 42380, 42900, 44825, 46618, 48900, 52975, 53790, 63570, 64350, 64548, 69927, 73350, 76284, 80685, 89650, 93236, 95355, 105950, 107580, 116545, 127140, 128700, 134475, 139854, 146700, 158925, 161370, 179300, 190710, 209781, 211900, 233090, 268950, 279708, 317850, 322740, 349635, 381420, 403425, 419562, 466180, 476775, 537900, 582725, 635700, 699270, 806850, 839124, 953550, 1048905, 1165450, 1398540, 1613700, 1748175, 1907100, 2097810, 2330900, 3496350, 4195620, 5244525, 6992700, 10489050, 20978100]

約数ペア:

[(1, 20978100), (2, 10489050), (3, 6992700), (4, 5244525), (5, 4195620), (6, 3496350), (9, 2330900), (10, 2097810), (11, 1907100), (12, 1748175), (13, 1613700), (15, 1398540), (18, 1165450), (20, 1048905), (22, 953550), (25, 839124), (26, 806850), (30, 699270), (33, 635700), (36, 582725), (39, 537900), (44, 476775), (45, 466180), (50, 419562), (52, 403425), (55, 381420), (60, 349635), (65, 322740), (66, 317850), (75, 279708), (78, 268950), (90, 233090), (99, 211900), (100, 209781), (110, 190710), (117, 179300), (130, 161370), (132, 158925), (143, 146700), (150, 139854), (156, 134475), (163, 128700), (165, 127140), (180, 116545), (195, 107580), (198, 105950), (220, 95355), (225, 93236), (234, 89650), (260, 80685), (275, 76284), (286, 73350), (300, 69927), (325, 64548), (326, 64350), (330, 63570), (390, 53790), (396, 52975), (429, 48900), (450, 46618), (468, 44825), (489, 42900), (495, 42380), (550, 38142), (572, 36675), (585, 35860), (650, 32274), (652, 32175), (660, 31785), (715, 29340), (780, 26895), (815, 25740), (825, 25428), (858, 24450), (900, 23309), (975, 21516), (978, 21450), (990, 21190), (1100, 19071), (1170, 17930), (1287, 16300), (1300, 16137), (1430, 14670), (1467, 14300), (1630, 12870), (1650, 12714), (1716, 12225), (1793, 11700), (1950, 10758), (1956, 10725), (1980, 10595), (2119, 9900), (2145, 9780), (2340, 8965), (2445, 8580), (2475, 8476), (2574, 8150), (2860, 7335), (2925, 7172), (2934, 7150), (3260, 6435), (3300, 6357), (3575, 5868), (3586, 5850), (3900, 5379), (4075, 5148), (4238, 4950), (4290, 4890)]