20004120

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{307}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 65585520

約数和(自身を除く): 45581400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 181, 307, 360, 362, 543, 614, 724, 905, 921, 1086, 1228, 1448, 1535, 1629, 1810, 1842, 2172, 2456, 2715, 2763, 3070, 3258, 3620, 3684, 4344, 4605, 5430, 5526, 6140, 6516, 7240, 7368, 8145, 9210, 10860, 11052, 12280, 13032, 13815, 16290, 18420, 21720, 22104, 27630, 32580, 36840, 55260, 55567, 65160, 110520, 111134, 166701, 222268, 277835, 333402, 444536, 500103, 555670, 666804, 833505, 1000206, 1111340, 1333608, 1667010, 2000412, 2222680, 2500515, 3334020, 4000824, 5001030, 6668040, 10002060, 20004120]

約数ペア:

[(1, 20004120), (2, 10002060), (3, 6668040), (4, 5001030), (5, 4000824), (6, 3334020), (8, 2500515), (9, 2222680), (10, 2000412), (12, 1667010), (15, 1333608), (18, 1111340), (20, 1000206), (24, 833505), (30, 666804), (36, 555670), (40, 500103), (45, 444536), (60, 333402), (72, 277835), (90, 222268), (120, 166701), (180, 111134), (181, 110520), (307, 65160), (360, 55567), (362, 55260), (543, 36840), (614, 32580), (724, 27630), (905, 22104), (921, 21720), (1086, 18420), (1228, 16290), (1448, 13815), (1535, 13032), (1629, 12280), (1810, 11052), (1842, 10860), (2172, 9210), (2456, 8145), (2715, 7368), (2763, 7240), (3070, 6516), (3258, 6140), (3620, 5526), (3684, 5430), (4344, 4605)]