20717970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7589}}^1$

素因数の和:7619

約数の個数: 64

約数和(自身を含む): 61205760

約数和(自身を除く): 40487790

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7589, 15178, 22767, 37945, 45534, 53123, 75890, 98657, 106246, 113835, 159369, 197314, 227670, 265615, 295971, 318738, 493285, 531230, 591942, 690599, 796845, 986570, 1381198, 1479855, 1593690, 2071797, 2959710, 3452995, 4143594, 6905990, 10358985, 20717970]

約数ペア:

[(1, 20717970), (2, 10358985), (3, 6905990), (5, 4143594), (6, 3452995), (7, 2959710), (10, 2071797), (13, 1593690), (14, 1479855), (15, 1381198), (21, 986570), (26, 796845), (30, 690599), (35, 591942), (39, 531230), (42, 493285), (65, 318738), (70, 295971), (78, 265615), (91, 227670), (105, 197314), (130, 159369), (182, 113835), (195, 106246), (210, 98657), (273, 75890), (390, 53123), (455, 45534), (546, 37945), (910, 22767), (1365, 15178), (2730, 7589)]