21918825

素因数分解:

$3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1597}}^1$

素因数の和:1674

約数の個数: 36

約数和(自身を含む): 39927628

約数和(自身を除く): 18008803

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 75, 183, 225, 305, 549, 915, 1525, 1597, 2745, 4575, 4791, 7985, 13725, 14373, 23955, 39925, 71865, 97417, 119775, 292251, 359325, 487085, 876753, 1461255, 2435425, 4383765, 7306275, 21918825]

約数ペア:

[(1, 21918825), (3, 7306275), (5, 4383765), (9, 2435425), (15, 1461255), (25, 876753), (45, 487085), (61, 359325), (75, 292251), (183, 119775), (225, 97417), (305, 71865), (549, 39925), (915, 23955), (1525, 14373), (1597, 13725), (2745, 7985), (4575, 4791)]