89190020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 192568320

約数和(自身を除く): 103378300

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 239, 397, 470, 478, 794, 940, 956, 1195, 1588, 1985, 2390, 3970, 4780, 7940, 11233, 18659, 22466, 37318, 44932, 56165, 74636, 93295, 94883, 112330, 186590, 189766, 224660, 373180, 379532, 474415, 948830, 1897660, 4459501, 8919002, 17838004, 22297505, 44595010, 89190020]

約数ペア:

[(1, 89190020), (2, 44595010), (4, 22297505), (5, 17838004), (10, 8919002), (20, 4459501), (47, 1897660), (94, 948830), (188, 474415), (235, 379532), (239, 373180), (397, 224660), (470, 189766), (478, 186590), (794, 112330), (940, 94883), (956, 93295), (1195, 74636), (1588, 56165), (1985, 44932), (2390, 37318), (3970, 22466), (4780, 18659), (7940, 11233)]