20501520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6571}}^1$

素因数の和:6600

約数の個数: 80

約数和(自身を含む): 68453952

約数和(自身を除く): 47952432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6571, 13142, 19713, 26284, 32855, 39426, 52568, 65710, 78852, 85423, 98565, 105136, 131420, 157704, 170846, 197130, 256269, 262840, 315408, 341692, 394260, 427115, 512538, 525680, 683384, 788520, 854230, 1025076, 1281345, 1366768, 1577040, 1708460, 2050152, 2562690, 3416920, 4100304, 5125380, 6833840, 10250760, 20501520]

約数ペア:

[(1, 20501520), (2, 10250760), (3, 6833840), (4, 5125380), (5, 4100304), (6, 3416920), (8, 2562690), (10, 2050152), (12, 1708460), (13, 1577040), (15, 1366768), (16, 1281345), (20, 1025076), (24, 854230), (26, 788520), (30, 683384), (39, 525680), (40, 512538), (48, 427115), (52, 394260), (60, 341692), (65, 315408), (78, 262840), (80, 256269), (104, 197130), (120, 170846), (130, 157704), (156, 131420), (195, 105136), (208, 98565), (240, 85423), (260, 78852), (312, 65710), (390, 52568), (520, 39426), (624, 32855), (780, 26284), (1040, 19713), (1560, 13142), (3120, 6571)]