19950050

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 39116544

約数和(自身を除く): 19166494

約数列:

[1, 2, 5, 10, 25, 31, 50, 61, 62, 122, 155, 211, 305, 310, 422, 610, 775, 1055, 1525, 1550, 1891, 2110, 3050, 3782, 5275, 6541, 9455, 10550, 12871, 13082, 18910, 25742, 32705, 47275, 64355, 65410, 94550, 128710, 163525, 321775, 327050, 399001, 643550, 798002, 1995005, 3990010, 9975025, 19950050]

約数ペア:

[(1, 19950050), (2, 9975025), (5, 3990010), (10, 1995005), (25, 798002), (31, 643550), (50, 399001), (61, 327050), (62, 321775), (122, 163525), (155, 128710), (211, 94550), (305, 65410), (310, 64355), (422, 47275), (610, 32705), (775, 25742), (1055, 18910), (1525, 13082), (1550, 12871), (1891, 10550), (2110, 9455), (3050, 6541), (3782, 5275)]