256891516

素因数分解:

$2^2\times 7^2\times {\mathrm{431}}^1\times {\mathrm{3041}}^1$

素因数の和:3490

約数の個数: 36

約数和(自身を含む): 524343456

約数和(自身を除く): 267451940

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 431, 862, 1724, 3017, 3041, 6034, 6082, 12068, 12164, 21119, 21287, 42238, 42574, 84476, 85148, 149009, 298018, 596036, 1310671, 2621342, 5242684, 9174697, 18349394, 36698788, 64222879, 128445758, 256891516]

約数ペア:

[(1, 256891516), (2, 128445758), (4, 64222879), (7, 36698788), (14, 18349394), (28, 9174697), (49, 5242684), (98, 2621342), (196, 1310671), (431, 596036), (862, 298018), (1724, 149009), (3017, 85148), (3041, 84476), (6034, 42574), (6082, 42238), (12068, 21287), (12164, 21119)]