161925920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77849}}^1$

素因数の和:77877

約数の個数: 48

約数和(自身を含む): 411982200

約数和(自身を除く): 250056280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 77849, 155698, 311396, 389245, 622792, 778490, 1012037, 1245584, 1556980, 2024074, 2491168, 3113960, 4048148, 5060185, 6227920, 8096296, 10120370, 12455840, 16192592, 20240740, 32385184, 40481480, 80962960, 161925920]

約数ペア:

[(1, 161925920), (2, 80962960), (4, 40481480), (5, 32385184), (8, 20240740), (10, 16192592), (13, 12455840), (16, 10120370), (20, 8096296), (26, 6227920), (32, 5060185), (40, 4048148), (52, 3113960), (65, 2491168), (80, 2024074), (104, 1556980), (130, 1245584), (160, 1012037), (208, 778490), (260, 622792), (416, 389245), (520, 311396), (1040, 155698), (2080, 77849)]