231657280

素因数分解:

$2^6\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1861}}^1$

素因数の和:2267

約数の個数: 56

約数和(自身を含む): 553349160

約数和(自身を除く): 321691880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 389, 778, 1556, 1861, 1945, 3112, 3722, 3890, 6224, 7444, 7780, 9305, 12448, 14888, 15560, 18610, 24896, 29776, 31120, 37220, 59552, 62240, 74440, 119104, 124480, 148880, 297760, 595520, 723929, 1447858, 2895716, 3619645, 5791432, 7239290, 11582864, 14478580, 23165728, 28957160, 46331456, 57914320, 115828640, 231657280]

約数ペア:

[(1, 231657280), (2, 115828640), (4, 57914320), (5, 46331456), (8, 28957160), (10, 23165728), (16, 14478580), (20, 11582864), (32, 7239290), (40, 5791432), (64, 3619645), (80, 2895716), (160, 1447858), (320, 723929), (389, 595520), (778, 297760), (1556, 148880), (1861, 124480), (1945, 119104), (3112, 74440), (3722, 62240), (3890, 59552), (6224, 37220), (7444, 31120), (7780, 29776), (9305, 24896), (12448, 18610), (14888, 15560)]