20215260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 67695264

約数和(自身を除く): 47480004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 53, 60, 65, 78, 90, 106, 117, 130, 156, 159, 163, 180, 195, 212, 234, 260, 265, 318, 326, 390, 468, 477, 489, 530, 585, 636, 652, 689, 780, 795, 815, 954, 978, 1060, 1170, 1378, 1467, 1590, 1630, 1908, 1956, 2067, 2119, 2340, 2385, 2445, 2756, 2934, 3180, 3260, 3445, 4134, 4238, 4770, 4890, 5868, 6201, 6357, 6890, 7335, 8268, 8476, 8639, 9540, 9780, 10335, 10595, 12402, 12714, 13780, 14670, 17278, 19071, 20670, 21190, 24804, 25428, 25917, 29340, 31005, 31785, 34556, 38142, 41340, 42380, 43195, 51834, 62010, 63570, 76284, 77751, 86390, 95355, 103668, 112307, 124020, 127140, 129585, 155502, 172780, 190710, 224614, 259170, 311004, 336921, 381420, 388755, 449228, 518340, 561535, 673842, 777510, 1010763, 1123070, 1347684, 1555020, 1684605, 2021526, 2246140, 3369210, 4043052, 5053815, 6738420, 10107630, 20215260]

約数ペア:

[(1, 20215260), (2, 10107630), (3, 6738420), (4, 5053815), (5, 4043052), (6, 3369210), (9, 2246140), (10, 2021526), (12, 1684605), (13, 1555020), (15, 1347684), (18, 1123070), (20, 1010763), (26, 777510), (30, 673842), (36, 561535), (39, 518340), (45, 449228), (52, 388755), (53, 381420), (60, 336921), (65, 311004), (78, 259170), (90, 224614), (106, 190710), (117, 172780), (130, 155502), (156, 129585), (159, 127140), (163, 124020), (180, 112307), (195, 103668), (212, 95355), (234, 86390), (260, 77751), (265, 76284), (318, 63570), (326, 62010), (390, 51834), (468, 43195), (477, 42380), (489, 41340), (530, 38142), (585, 34556), (636, 31785), (652, 31005), (689, 29340), (780, 25917), (795, 25428), (815, 24804), (954, 21190), (978, 20670), (1060, 19071), (1170, 17278), (1378, 14670), (1467, 13780), (1590, 12714), (1630, 12402), (1908, 10595), (1956, 10335), (2067, 9780), (2119, 9540), (2340, 8639), (2385, 8476), (2445, 8268), (2756, 7335), (2934, 6890), (3180, 6357), (3260, 6201), (3445, 5868), (4134, 4890), (4238, 4770)]