79620400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6421}}^1$

素因数の和:6470

約数の個数: 60

約数和(自身を含む): 197489344

約数和(自身を除く): 117868944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 6421, 12400, 12842, 25684, 32105, 51368, 64210, 102736, 128420, 160525, 199051, 256840, 321050, 398102, 513680, 642100, 796204, 995255, 1284200, 1592408, 1990510, 2568400, 3184816, 3981020, 4976275, 7962040, 9952550, 15924080, 19905100, 39810200, 79620400]

約数ペア:

[(1, 79620400), (2, 39810200), (4, 19905100), (5, 15924080), (8, 9952550), (10, 7962040), (16, 4976275), (20, 3981020), (25, 3184816), (31, 2568400), (40, 1990510), (50, 1592408), (62, 1284200), (80, 995255), (100, 796204), (124, 642100), (155, 513680), (200, 398102), (248, 321050), (310, 256840), (400, 199051), (496, 160525), (620, 128420), (775, 102736), (1240, 64210), (1550, 51368), (2480, 32105), (3100, 25684), (6200, 12842), (6421, 12400)]