90730180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2399}}^1$

素因数の和:2500

約数の個数: 48

約数和(自身を含む): 199987200

約数和(自身を除く): 109257020

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 2399, 3782, 4798, 7564, 9455, 9596, 11995, 18910, 23990, 37820, 47980, 74369, 146339, 148738, 292678, 297476, 371845, 585356, 731695, 743690, 1463390, 1487380, 2926780, 4536509, 9073018, 18146036, 22682545, 45365090, 90730180]

約数ペア:

[(1, 90730180), (2, 45365090), (4, 22682545), (5, 18146036), (10, 9073018), (20, 4536509), (31, 2926780), (61, 1487380), (62, 1463390), (122, 743690), (124, 731695), (155, 585356), (244, 371845), (305, 297476), (310, 292678), (610, 148738), (620, 146339), (1220, 74369), (1891, 47980), (2399, 37820), (3782, 23990), (4798, 18910), (7564, 11995), (9455, 9596)]