39815780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 87091200

約数和(自身を除く): 47275420

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 298, 310, 431, 596, 620, 745, 862, 1490, 1724, 2155, 2980, 4310, 4619, 8620, 9238, 13361, 18476, 23095, 26722, 46190, 53444, 64219, 66805, 92380, 128438, 133610, 256876, 267220, 321095, 642190, 1284380, 1990789, 3981578, 7963156, 9953945, 19907890, 39815780]

約数ペア:

[(1, 39815780), (2, 19907890), (4, 9953945), (5, 7963156), (10, 3981578), (20, 1990789), (31, 1284380), (62, 642190), (124, 321095), (149, 267220), (155, 256876), (298, 133610), (310, 128438), (431, 92380), (596, 66805), (620, 64219), (745, 53444), (862, 46190), (1490, 26722), (1724, 23095), (2155, 18476), (2980, 13361), (4310, 9238), (4619, 8620)]