31624840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1082

約数の個数: 64

約数和(自身を含む): 77963760

約数和(自身を除く): 46338920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 997, 1220, 1586, 1994, 2440, 3172, 3965, 3988, 4985, 6344, 7930, 7976, 9970, 12961, 15860, 19940, 25922, 31720, 39880, 51844, 60817, 64805, 103688, 121634, 129610, 243268, 259220, 304085, 486536, 518440, 608170, 790621, 1216340, 1581242, 2432680, 3162484, 3953105, 6324968, 7906210, 15812420, 31624840]

約数ペア:

[(1, 31624840), (2, 15812420), (4, 7906210), (5, 6324968), (8, 3953105), (10, 3162484), (13, 2432680), (20, 1581242), (26, 1216340), (40, 790621), (52, 608170), (61, 518440), (65, 486536), (104, 304085), (122, 259220), (130, 243268), (244, 129610), (260, 121634), (305, 103688), (488, 64805), (520, 60817), (610, 51844), (793, 39880), (997, 31720), (1220, 25922), (1586, 19940), (1994, 15860), (2440, 12961), (3172, 9970), (3965, 7976), (3988, 7930), (4985, 6344)]