138670720

素因数分解:

$2^7\times 5^1\times {\mathrm{389}}^1\times {\mathrm{557}}^1$

素因数の和:965

約数の個数: 64

約数和(自身を含む): 332958600

約数和(自身を除く): 194287880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 389, 557, 640, 778, 1114, 1556, 1945, 2228, 2785, 3112, 3890, 4456, 5570, 6224, 7780, 8912, 11140, 12448, 15560, 17824, 22280, 24896, 31120, 35648, 44560, 49792, 62240, 71296, 89120, 124480, 178240, 216673, 248960, 356480, 433346, 866692, 1083365, 1733384, 2166730, 3466768, 4333460, 6933536, 8666920, 13867072, 17333840, 27734144, 34667680, 69335360, 138670720]

約数ペア:

[(1, 138670720), (2, 69335360), (4, 34667680), (5, 27734144), (8, 17333840), (10, 13867072), (16, 8666920), (20, 6933536), (32, 4333460), (40, 3466768), (64, 2166730), (80, 1733384), (128, 1083365), (160, 866692), (320, 433346), (389, 356480), (557, 248960), (640, 216673), (778, 178240), (1114, 124480), (1556, 89120), (1945, 71296), (2228, 62240), (2785, 49792), (3112, 44560), (3890, 35648), (4456, 31120), (5570, 24896), (6224, 22280), (7780, 17824), (8912, 15560), (11140, 12448)]