15812420

素因数分解:

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

素因数の和:1080

約数の個数: 48

約数和(自身を含む): 36383088

約数和(自身を除く): 20570668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 997, 1220, 1586, 1994, 3172, 3965, 3988, 4985, 7930, 9970, 12961, 15860, 19940, 25922, 51844, 60817, 64805, 121634, 129610, 243268, 259220, 304085, 608170, 790621, 1216340, 1581242, 3162484, 3953105, 7906210, 15812420]

約数ペア:

[(1, 15812420), (2, 7906210), (4, 3953105), (5, 3162484), (10, 1581242), (13, 1216340), (20, 790621), (26, 608170), (52, 304085), (61, 259220), (65, 243268), (122, 129610), (130, 121634), (244, 64805), (260, 60817), (305, 51844), (610, 25922), (793, 19940), (997, 15860), (1220, 12961), (1586, 9970), (1994, 7930), (3172, 4985), (3965, 3988)]