158138840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64811}}^1$

素因数の和:64883

約数の個数: 32

約数和(自身を含む): 361650960

約数和(自身を除く): 203512120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 64811, 129622, 259244, 324055, 518488, 648110, 1296220, 2592440, 3953471, 7906942, 15813884, 19767355, 31627768, 39534710, 79069420, 158138840]

約数ペア:

[(1, 158138840), (2, 79069420), (4, 39534710), (5, 31627768), (8, 19767355), (10, 15813884), (20, 7906942), (40, 3953471), (61, 2592440), (122, 1296220), (244, 648110), (305, 518488), (488, 324055), (610, 259244), (1220, 129622), (2440, 64811)]