18746920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1451}}^1$

素因数の和:1498

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 28297880

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1451, 1615, 2584, 2902, 3230, 5804, 6460, 7255, 11608, 12920, 14510, 24667, 27569, 29020, 49334, 55138, 58040, 98668, 110276, 123335, 137845, 197336, 220552, 246670, 275690, 468673, 493340, 551380, 937346, 986680, 1102760, 1874692, 2343365, 3749384, 4686730, 9373460, 18746920]

約数ペア:

[(1, 18746920), (2, 9373460), (4, 4686730), (5, 3749384), (8, 2343365), (10, 1874692), (17, 1102760), (19, 986680), (20, 937346), (34, 551380), (38, 493340), (40, 468673), (68, 275690), (76, 246670), (85, 220552), (95, 197336), (136, 137845), (152, 123335), (170, 110276), (190, 98668), (323, 58040), (340, 55138), (380, 49334), (646, 29020), (680, 27569), (760, 24667), (1292, 14510), (1451, 12920), (1615, 11608), (2584, 7255), (2902, 6460), (3230, 5804)]