20091120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11959}}^1$

素因数の和:11982

約数の個数: 80

約数和(自身を含む): 71185920

約数和(自身を除く): 51094800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11959, 23918, 35877, 47836, 59795, 71754, 83713, 95672, 119590, 143508, 167426, 179385, 191344, 239180, 251139, 287016, 334852, 358770, 418565, 478360, 502278, 574032, 669704, 717540, 837130, 956720, 1004556, 1255695, 1339408, 1435080, 1674260, 2009112, 2511390, 2870160, 3348520, 4018224, 5022780, 6697040, 10045560, 20091120]

約数ペア:

[(1, 20091120), (2, 10045560), (3, 6697040), (4, 5022780), (5, 4018224), (6, 3348520), (7, 2870160), (8, 2511390), (10, 2009112), (12, 1674260), (14, 1435080), (15, 1339408), (16, 1255695), (20, 1004556), (21, 956720), (24, 837130), (28, 717540), (30, 669704), (35, 574032), (40, 502278), (42, 478360), (48, 418565), (56, 358770), (60, 334852), (70, 287016), (80, 251139), (84, 239180), (105, 191344), (112, 179385), (120, 167426), (140, 143508), (168, 119590), (210, 95672), (240, 83713), (280, 71754), (336, 59795), (420, 47836), (560, 35877), (840, 23918), (1680, 11959)]