20033520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6421}}^1$

素因数の和:6450

約数の個数: 80

約数和(自身を含む): 66891552

約数和(自身を除く): 46858032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6421, 12842, 19263, 25684, 32105, 38526, 51368, 64210, 77052, 83473, 96315, 102736, 128420, 154104, 166946, 192630, 250419, 256840, 308208, 333892, 385260, 417365, 500838, 513680, 667784, 770520, 834730, 1001676, 1252095, 1335568, 1541040, 1669460, 2003352, 2504190, 3338920, 4006704, 5008380, 6677840, 10016760, 20033520]

約数ペア:

[(1, 20033520), (2, 10016760), (3, 6677840), (4, 5008380), (5, 4006704), (6, 3338920), (8, 2504190), (10, 2003352), (12, 1669460), (13, 1541040), (15, 1335568), (16, 1252095), (20, 1001676), (24, 834730), (26, 770520), (30, 667784), (39, 513680), (40, 500838), (48, 417365), (52, 385260), (60, 333892), (65, 308208), (78, 256840), (80, 250419), (104, 192630), (120, 166946), (130, 154104), (156, 128420), (195, 102736), (208, 96315), (240, 83473), (260, 77052), (312, 64210), (390, 51368), (520, 38526), (624, 32105), (780, 25684), (1040, 19263), (1560, 12842), (3120, 6421)]