287122120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{117673}}^1$

素因数の和:117745

約数の個数: 32

約数和(自身を含む): 656620920

約数和(自身を除く): 369498800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 117673, 235346, 470692, 588365, 941384, 1176730, 2353460, 4706920, 7178053, 14356106, 28712212, 35890265, 57424424, 71780530, 143561060, 287122120]

約数ペア:

[(1, 287122120), (2, 143561060), (4, 71780530), (5, 57424424), (8, 35890265), (10, 28712212), (20, 14356106), (40, 7178053), (61, 4706920), (122, 2353460), (244, 1176730), (305, 941384), (488, 588365), (610, 470692), (1220, 235346), (2440, 117673)]