20996040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:383

約数の個数: 128

約数和(自身を含む): 69632640

約数和(自身を除く): 48636600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 43, 52, 60, 65, 78, 86, 104, 120, 129, 130, 156, 172, 195, 215, 258, 260, 312, 313, 344, 390, 430, 516, 520, 559, 626, 645, 780, 860, 939, 1032, 1118, 1252, 1290, 1560, 1565, 1677, 1720, 1878, 2236, 2504, 2580, 2795, 3130, 3354, 3756, 4069, 4472, 4695, 5160, 5590, 6260, 6708, 7512, 8138, 8385, 9390, 11180, 12207, 12520, 13416, 13459, 16276, 16770, 18780, 20345, 22360, 24414, 26918, 32552, 33540, 37560, 40377, 40690, 48828, 53836, 61035, 67080, 67295, 80754, 81380, 97656, 107672, 122070, 134590, 161508, 162760, 174967, 201885, 244140, 269180, 323016, 349934, 403770, 488280, 524901, 538360, 699868, 807540, 874835, 1049802, 1399736, 1615080, 1749670, 2099604, 2624505, 3499340, 4199208, 5249010, 6998680, 10498020, 20996040]

約数ペア:

[(1, 20996040), (2, 10498020), (3, 6998680), (4, 5249010), (5, 4199208), (6, 3499340), (8, 2624505), (10, 2099604), (12, 1749670), (13, 1615080), (15, 1399736), (20, 1049802), (24, 874835), (26, 807540), (30, 699868), (39, 538360), (40, 524901), (43, 488280), (52, 403770), (60, 349934), (65, 323016), (78, 269180), (86, 244140), (104, 201885), (120, 174967), (129, 162760), (130, 161508), (156, 134590), (172, 122070), (195, 107672), (215, 97656), (258, 81380), (260, 80754), (312, 67295), (313, 67080), (344, 61035), (390, 53836), (430, 48828), (516, 40690), (520, 40377), (559, 37560), (626, 33540), (645, 32552), (780, 26918), (860, 24414), (939, 22360), (1032, 20345), (1118, 18780), (1252, 16770), (1290, 16276), (1560, 13459), (1565, 13416), (1677, 12520), (1720, 12207), (1878, 11180), (2236, 9390), (2504, 8385), (2580, 8138), (2795, 7512), (3130, 6708), (3354, 6260), (3756, 5590), (4069, 5160), (4472, 4695)]