20975400

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 72346560

約数和(自身を除く): 51371160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 43, 45, 50, 60, 72, 75, 86, 90, 100, 120, 129, 150, 172, 180, 200, 215, 225, 258, 271, 300, 344, 360, 387, 430, 450, 516, 542, 600, 645, 774, 813, 860, 900, 1032, 1075, 1084, 1290, 1355, 1548, 1626, 1720, 1800, 1935, 2150, 2168, 2439, 2580, 2710, 3096, 3225, 3252, 3870, 4065, 4300, 4878, 5160, 5420, 6450, 6504, 6775, 7740, 8130, 8600, 9675, 9756, 10840, 11653, 12195, 12900, 13550, 15480, 16260, 19350, 19512, 20325, 23306, 24390, 25800, 27100, 32520, 34959, 38700, 40650, 46612, 48780, 54200, 58265, 60975, 69918, 77400, 81300, 93224, 97560, 104877, 116530, 121950, 139836, 162600, 174795, 209754, 233060, 243900, 279672, 291325, 349590, 419508, 466120, 487800, 524385, 582650, 699180, 839016, 873975, 1048770, 1165300, 1398360, 1747950, 2097540, 2330600, 2621925, 3495900, 4195080, 5243850, 6991800, 10487700, 20975400]

約数ペア:

[(1, 20975400), (2, 10487700), (3, 6991800), (4, 5243850), (5, 4195080), (6, 3495900), (8, 2621925), (9, 2330600), (10, 2097540), (12, 1747950), (15, 1398360), (18, 1165300), (20, 1048770), (24, 873975), (25, 839016), (30, 699180), (36, 582650), (40, 524385), (43, 487800), (45, 466120), (50, 419508), (60, 349590), (72, 291325), (75, 279672), (86, 243900), (90, 233060), (100, 209754), (120, 174795), (129, 162600), (150, 139836), (172, 121950), (180, 116530), (200, 104877), (215, 97560), (225, 93224), (258, 81300), (271, 77400), (300, 69918), (344, 60975), (360, 58265), (387, 54200), (430, 48780), (450, 46612), (516, 40650), (542, 38700), (600, 34959), (645, 32520), (774, 27100), (813, 25800), (860, 24390), (900, 23306), (1032, 20325), (1075, 19512), (1084, 19350), (1290, 16260), (1355, 15480), (1548, 13550), (1626, 12900), (1720, 12195), (1800, 11653), (1935, 10840), (2150, 9756), (2168, 9675), (2439, 8600), (2580, 8130), (2710, 7740), (3096, 6775), (3225, 6504), (3252, 6450), (3870, 5420), (4065, 5160), (4300, 4878)]