2811800920

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1\times {\mathrm{1151}}^1$

素因数の和:1708

約数の個数: 64

約数和(自身を含む): 6388761600

約数和(自身を除く): 3576960680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 389, 628, 778, 785, 1151, 1256, 1556, 1570, 1945, 2302, 3112, 3140, 3890, 4604, 5755, 6280, 7780, 9208, 11510, 15560, 23020, 46040, 61073, 122146, 180707, 244292, 305365, 361414, 447739, 488584, 610730, 722828, 895478, 903535, 1221460, 1445656, 1790956, 1807070, 2238695, 2442920, 3581912, 3614140, 4477390, 7228280, 8954780, 17909560, 70295023, 140590046, 281180092, 351475115, 562360184, 702950230, 1405900460, 2811800920]

約数ペア:

[(1, 2811800920), (2, 1405900460), (4, 702950230), (5, 562360184), (8, 351475115), (10, 281180092), (20, 140590046), (40, 70295023), (157, 17909560), (314, 8954780), (389, 7228280), (628, 4477390), (778, 3614140), (785, 3581912), (1151, 2442920), (1256, 2238695), (1556, 1807070), (1570, 1790956), (1945, 1445656), (2302, 1221460), (3112, 903535), (3140, 895478), (3890, 722828), (4604, 610730), (5755, 488584), (6280, 447739), (7780, 361414), (9208, 305365), (11510, 244292), (15560, 180707), (23020, 122146), (46040, 61073)]