278319680

素因数分解:

$2^6\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1663}}^1$

素因数の和:2203

約数の個数: 56

約数和(自身を含む): 664415232

約数和(自身を除く): 386095552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 523, 1046, 1663, 2092, 2615, 3326, 4184, 5230, 6652, 8315, 8368, 10460, 13304, 16630, 16736, 20920, 26608, 33260, 33472, 41840, 53216, 66520, 83680, 106432, 133040, 167360, 266080, 532160, 869749, 1739498, 3478996, 4348745, 6957992, 8697490, 13915984, 17394980, 27831968, 34789960, 55663936, 69579920, 139159840, 278319680]

約数ペア:

[(1, 278319680), (2, 139159840), (4, 69579920), (5, 55663936), (8, 34789960), (10, 27831968), (16, 17394980), (20, 13915984), (32, 8697490), (40, 6957992), (64, 4348745), (80, 3478996), (160, 1739498), (320, 869749), (523, 532160), (1046, 266080), (1663, 167360), (2092, 133040), (2615, 106432), (3326, 83680), (4184, 66520), (5230, 53216), (6652, 41840), (8315, 33472), (8368, 33260), (10460, 26608), (13304, 20920), (16630, 16736)]