1777990180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{9781}}^1$

素因数の和:10000

約数の個数: 48

約数和(自身を含む): 3820849200

約数和(自身を除く): 2042859020

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 149, 244, 298, 305, 596, 610, 745, 1220, 1490, 2980, 9089, 9781, 18178, 19562, 36356, 39124, 45445, 48905, 90890, 97810, 181780, 195620, 596641, 1193282, 1457369, 2386564, 2914738, 2983205, 5829476, 5966410, 7286845, 11932820, 14573690, 29147380, 88899509, 177799018, 355598036, 444497545, 888995090, 1777990180]

約数ペア:

[(1, 1777990180), (2, 888995090), (4, 444497545), (5, 355598036), (10, 177799018), (20, 88899509), (61, 29147380), (122, 14573690), (149, 11932820), (244, 7286845), (298, 5966410), (305, 5829476), (596, 2983205), (610, 2914738), (745, 2386564), (1220, 1457369), (1490, 1193282), (2980, 596641), (9089, 195620), (9781, 181780), (18178, 97810), (19562, 90890), (36356, 48905), (39124, 45445)]