19702800

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:458

約数の個数: 180

約数和(自身を含む): 73808644

約数和(自身を除く): 54105844

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 30, 36, 39, 40, 45, 48, 50, 52, 60, 65, 72, 75, 78, 80, 90, 100, 104, 117, 120, 130, 144, 150, 156, 180, 195, 200, 208, 225, 234, 240, 260, 300, 312, 325, 360, 390, 400, 421, 450, 468, 520, 585, 600, 624, 650, 720, 780, 842, 900, 936, 975, 1040, 1170, 1200, 1263, 1300, 1560, 1684, 1800, 1872, 1950, 2105, 2340, 2526, 2600, 2925, 3120, 3368, 3600, 3789, 3900, 4210, 4680, 5052, 5200, 5473, 5850, 6315, 6736, 7578, 7800, 8420, 9360, 10104, 10525, 10946, 11700, 12630, 15156, 15600, 16419, 16840, 18945, 20208, 21050, 21892, 23400, 25260, 27365, 30312, 31575, 32838, 33680, 37890, 42100, 43784, 46800, 49257, 50520, 54730, 60624, 63150, 65676, 75780, 82095, 84200, 87568, 94725, 98514, 101040, 109460, 126300, 131352, 136825, 151560, 164190, 168400, 189450, 197028, 218920, 246285, 252600, 262704, 273650, 303120, 328380, 378900, 394056, 410475, 437840, 492570, 505200, 547300, 656760, 757800, 788112, 820950, 985140, 1094600, 1231425, 1313520, 1515600, 1641900, 1970280, 2189200, 2462850, 3283800, 3940560, 4925700, 6567600, 9851400, 19702800]

約数ペア:

[(1, 19702800), (2, 9851400), (3, 6567600), (4, 4925700), (5, 3940560), (6, 3283800), (8, 2462850), (9, 2189200), (10, 1970280), (12, 1641900), (13, 1515600), (15, 1313520), (16, 1231425), (18, 1094600), (20, 985140), (24, 820950), (25, 788112), (26, 757800), (30, 656760), (36, 547300), (39, 505200), (40, 492570), (45, 437840), (48, 410475), (50, 394056), (52, 378900), (60, 328380), (65, 303120), (72, 273650), (75, 262704), (78, 252600), (80, 246285), (90, 218920), (100, 197028), (104, 189450), (117, 168400), (120, 164190), (130, 151560), (144, 136825), (150, 131352), (156, 126300), (180, 109460), (195, 101040), (200, 98514), (208, 94725), (225, 87568), (234, 84200), (240, 82095), (260, 75780), (300, 65676), (312, 63150), (325, 60624), (360, 54730), (390, 50520), (400, 49257), (421, 46800), (450, 43784), (468, 42100), (520, 37890), (585, 33680), (600, 32838), (624, 31575), (650, 30312), (720, 27365), (780, 25260), (842, 23400), (900, 21892), (936, 21050), (975, 20208), (1040, 18945), (1170, 16840), (1200, 16419), (1263, 15600), (1300, 15156), (1560, 12630), (1684, 11700), (1800, 10946), (1872, 10525), (1950, 10104), (2105, 9360), (2340, 8420), (2526, 7800), (2600, 7578), (2925, 6736), (3120, 6315), (3368, 5850), (3600, 5473), (3789, 5200), (3900, 5052), (4210, 4680)]