20306640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{401}}^1$

素因数の和:628

約数の個数: 80

約数和(自身を含む): 63406656

約数和(自身を除く): 43100016

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 211, 240, 401, 422, 633, 802, 844, 1055, 1203, 1266, 1604, 1688, 2005, 2110, 2406, 2532, 3165, 3208, 3376, 4010, 4220, 4812, 5064, 6015, 6330, 6416, 8020, 8440, 9624, 10128, 12030, 12660, 16040, 16880, 19248, 24060, 25320, 32080, 48120, 50640, 84611, 96240, 169222, 253833, 338444, 423055, 507666, 676888, 846110, 1015332, 1269165, 1353776, 1692220, 2030664, 2538330, 3384440, 4061328, 5076660, 6768880, 10153320, 20306640]

約数ペア:

[(1, 20306640), (2, 10153320), (3, 6768880), (4, 5076660), (5, 4061328), (6, 3384440), (8, 2538330), (10, 2030664), (12, 1692220), (15, 1353776), (16, 1269165), (20, 1015332), (24, 846110), (30, 676888), (40, 507666), (48, 423055), (60, 338444), (80, 253833), (120, 169222), (211, 96240), (240, 84611), (401, 50640), (422, 48120), (633, 32080), (802, 25320), (844, 24060), (1055, 19248), (1203, 16880), (1266, 16040), (1604, 12660), (1688, 12030), (2005, 10128), (2110, 9624), (2406, 8440), (2532, 8020), (3165, 6416), (3208, 6330), (3376, 6015), (4010, 5064), (4220, 4812)]