64419760

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{10193}}^1$

素因数の和:10285

約数の個数: 40

約数和(自身を含む): 151686720

約数和(自身を除く): 87266960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 10193, 20386, 40772, 50965, 81544, 101930, 163088, 203860, 407720, 805247, 815440, 1610494, 3220988, 4026235, 6441976, 8052470, 12883952, 16104940, 32209880, 64419760]

約数ペア:

[(1, 64419760), (2, 32209880), (4, 16104940), (5, 12883952), (8, 8052470), (10, 6441976), (16, 4026235), (20, 3220988), (40, 1610494), (79, 815440), (80, 805247), (158, 407720), (316, 203860), (395, 163088), (632, 101930), (790, 81544), (1264, 50965), (1580, 40772), (3160, 20386), (6320, 10193)]