636696680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{121507}}^1$

素因数の和:121649

約数の個数: 32

約数和(自身を含む): 1443515040

約数和(自身を除く): 806818360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 121507, 243014, 486028, 607535, 972056, 1215070, 2430140, 4860280, 15917417, 31834834, 63669668, 79587085, 127339336, 159174170, 318348340, 636696680]

約数ペア:

[(1, 636696680), (2, 318348340), (4, 159174170), (5, 127339336), (8, 79587085), (10, 63669668), (20, 31834834), (40, 15917417), (131, 4860280), (262, 2430140), (524, 1215070), (655, 972056), (1048, 607535), (1310, 486028), (2620, 243014), (5240, 121507)]