25431320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 61236000

約数和(自身を除く): 35804680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 149, 170, 251, 298, 340, 502, 596, 680, 745, 1004, 1192, 1255, 1490, 2008, 2510, 2533, 2980, 4267, 5020, 5066, 5960, 8534, 10040, 10132, 12665, 17068, 20264, 21335, 25330, 34136, 37399, 42670, 50660, 74798, 85340, 101320, 149596, 170680, 186995, 299192, 373990, 635783, 747980, 1271566, 1495960, 2543132, 3178915, 5086264, 6357830, 12715660, 25431320]

約数ペア:

[(1, 25431320), (2, 12715660), (4, 6357830), (5, 5086264), (8, 3178915), (10, 2543132), (17, 1495960), (20, 1271566), (34, 747980), (40, 635783), (68, 373990), (85, 299192), (136, 186995), (149, 170680), (170, 149596), (251, 101320), (298, 85340), (340, 74798), (502, 50660), (596, 42670), (680, 37399), (745, 34136), (1004, 25330), (1192, 21335), (1255, 20264), (1490, 17068), (2008, 12665), (2510, 10132), (2533, 10040), (2980, 8534), (4267, 5960), (5020, 5066)]