20161488100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{49549}}^1$

素因数の和:49889

約数の個数: 72

約数和(自身を含む): 47267330600

約数和(自身を除く): 27105842500

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 313, 325, 626, 650, 1252, 1300, 1565, 3130, 4069, 6260, 7825, 8138, 15650, 16276, 20345, 31300, 40690, 49549, 81380, 99098, 101725, 198196, 203450, 247745, 406900, 495490, 644137, 990980, 1238725, 1288274, 2477450, 2576548, 3220685, 4954900, 6441370, 12882740, 15508837, 16103425, 31017674, 32206850, 62035348, 64413700, 77544185, 155088370, 201614881, 310176740, 387720925, 403229762, 775441850, 806459524, 1008074405, 1550883700, 2016148810, 4032297620, 5040372025, 10080744050, 20161488100]

約数ペア:

[(1, 20161488100), (2, 10080744050), (4, 5040372025), (5, 4032297620), (10, 2016148810), (13, 1550883700), (20, 1008074405), (25, 806459524), (26, 775441850), (50, 403229762), (52, 387720925), (65, 310176740), (100, 201614881), (130, 155088370), (260, 77544185), (313, 64413700), (325, 62035348), (626, 32206850), (650, 31017674), (1252, 16103425), (1300, 15508837), (1565, 12882740), (3130, 6441370), (4069, 4954900), (6260, 3220685), (7825, 2576548), (8138, 2477450), (15650, 1288274), (16276, 1238725), (20345, 990980), (31300, 644137), (40690, 495490), (49549, 406900), (81380, 247745), (99098, 203450), (101725, 198196)]