390784640

素因数分解:

$2^7\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1637}}^1$

素因数の和:2029

約数の個数: 64

約数和(自身を含む): 937296360

約数和(自身を除く): 546511720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 373, 640, 746, 1492, 1637, 1865, 2984, 3274, 3730, 5968, 6548, 7460, 8185, 11936, 13096, 14920, 16370, 23872, 26192, 29840, 32740, 47744, 52384, 59680, 65480, 104768, 119360, 130960, 209536, 238720, 261920, 523840, 610601, 1047680, 1221202, 2442404, 3053005, 4884808, 6106010, 9769616, 12212020, 19539232, 24424040, 39078464, 48848080, 78156928, 97696160, 195392320, 390784640]

約数ペア:

[(1, 390784640), (2, 195392320), (4, 97696160), (5, 78156928), (8, 48848080), (10, 39078464), (16, 24424040), (20, 19539232), (32, 12212020), (40, 9769616), (64, 6106010), (80, 4884808), (128, 3053005), (160, 2442404), (320, 1221202), (373, 1047680), (640, 610601), (746, 523840), (1492, 261920), (1637, 238720), (1865, 209536), (2984, 130960), (3274, 119360), (3730, 104768), (5968, 65480), (6548, 59680), (7460, 52384), (8185, 47744), (11936, 32740), (13096, 29840), (14920, 26192), (16370, 23872)]