20717040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2333}}^1$

素因数の和:2386

約数の個数: 80

約数和(自身を含む): 65986848

約数和(自身を除く): 45269808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2333, 2960, 4440, 4666, 6999, 8880, 9332, 11665, 13998, 18664, 23330, 27996, 34995, 37328, 46660, 55992, 69990, 86321, 93320, 111984, 139980, 172642, 186640, 258963, 279960, 345284, 431605, 517926, 559920, 690568, 863210, 1035852, 1294815, 1381136, 1726420, 2071704, 2589630, 3452840, 4143408, 5179260, 6905680, 10358520, 20717040]

約数ペア:

[(1, 20717040), (2, 10358520), (3, 6905680), (4, 5179260), (5, 4143408), (6, 3452840), (8, 2589630), (10, 2071704), (12, 1726420), (15, 1381136), (16, 1294815), (20, 1035852), (24, 863210), (30, 690568), (37, 559920), (40, 517926), (48, 431605), (60, 345284), (74, 279960), (80, 258963), (111, 186640), (120, 172642), (148, 139980), (185, 111984), (222, 93320), (240, 86321), (296, 69990), (370, 55992), (444, 46660), (555, 37328), (592, 34995), (740, 27996), (888, 23330), (1110, 18664), (1480, 13998), (1776, 11665), (2220, 9332), (2333, 8880), (2960, 6999), (4440, 4666)]