28389620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:573

約数の個数: 72

約数和(自身を含む): 70670880

約数和(自身を除く): 42281260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 59, 70, 98, 118, 140, 196, 236, 245, 295, 413, 490, 491, 590, 826, 980, 982, 1180, 1652, 1964, 2065, 2455, 2891, 3437, 4130, 4910, 5782, 6874, 8260, 9820, 11564, 13748, 14455, 17185, 24059, 28910, 28969, 34370, 48118, 57820, 57938, 68740, 96236, 115876, 120295, 144845, 202783, 240590, 289690, 405566, 481180, 579380, 811132, 1013915, 1419481, 2027830, 2838962, 4055660, 5677924, 7097405, 14194810, 28389620]

約数ペア:

[(1, 28389620), (2, 14194810), (4, 7097405), (5, 5677924), (7, 4055660), (10, 2838962), (14, 2027830), (20, 1419481), (28, 1013915), (35, 811132), (49, 579380), (59, 481180), (70, 405566), (98, 289690), (118, 240590), (140, 202783), (196, 144845), (236, 120295), (245, 115876), (295, 96236), (413, 68740), (490, 57938), (491, 57820), (590, 48118), (826, 34370), (980, 28969), (982, 28910), (1180, 24059), (1652, 17185), (1964, 14455), (2065, 13748), (2455, 11564), (2891, 9820), (3437, 8260), (4130, 6874), (4910, 5782)]