66438760

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{373}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 154432080

約数和(自身を除く): 87993320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 73, 122, 146, 244, 292, 305, 365, 373, 488, 584, 610, 730, 746, 1220, 1460, 1492, 1865, 2440, 2920, 2984, 3730, 4453, 7460, 8906, 14920, 17812, 22265, 22753, 27229, 35624, 44530, 45506, 54458, 89060, 91012, 108916, 113765, 136145, 178120, 182024, 217832, 227530, 272290, 455060, 544580, 910120, 1089160, 1660969, 3321938, 6643876, 8304845, 13287752, 16609690, 33219380, 66438760]

約数ペア:

[(1, 66438760), (2, 33219380), (4, 16609690), (5, 13287752), (8, 8304845), (10, 6643876), (20, 3321938), (40, 1660969), (61, 1089160), (73, 910120), (122, 544580), (146, 455060), (244, 272290), (292, 227530), (305, 217832), (365, 182024), (373, 178120), (488, 136145), (584, 113765), (610, 108916), (730, 91012), (746, 89060), (1220, 54458), (1460, 45506), (1492, 44530), (1865, 35624), (2440, 27229), (2920, 22753), (2984, 22265), (3730, 17812), (4453, 14920), (7460, 8906)]