25990640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:466

約数の個数: 80

約数和(自身を含む): 66224928

約数和(自身を除く): 40234288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 335, 373, 520, 536, 670, 746, 871, 1040, 1072, 1340, 1492, 1742, 1865, 2680, 2984, 3484, 3730, 4355, 4849, 5360, 5968, 6968, 7460, 8710, 9698, 13936, 14920, 17420, 19396, 24245, 24991, 29840, 34840, 38792, 48490, 49982, 69680, 77584, 96980, 99964, 124955, 193960, 199928, 249910, 324883, 387920, 399856, 499820, 649766, 999640, 1299532, 1624415, 1999280, 2599064, 3248830, 5198128, 6497660, 12995320, 25990640]

約数ペア:

[(1, 25990640), (2, 12995320), (4, 6497660), (5, 5198128), (8, 3248830), (10, 2599064), (13, 1999280), (16, 1624415), (20, 1299532), (26, 999640), (40, 649766), (52, 499820), (65, 399856), (67, 387920), (80, 324883), (104, 249910), (130, 199928), (134, 193960), (208, 124955), (260, 99964), (268, 96980), (335, 77584), (373, 69680), (520, 49982), (536, 48490), (670, 38792), (746, 34840), (871, 29840), (1040, 24991), (1072, 24245), (1340, 19396), (1492, 17420), (1742, 14920), (1865, 13936), (2680, 9698), (2984, 8710), (3484, 7460), (3730, 6968), (4355, 5968), (4849, 5360)]