19915140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47417}}^1$

素因数の和:47436

約数の個数: 48

約数和(自身を含む): 63729792

約数和(自身を除く): 43814652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47417, 94834, 142251, 189668, 237085, 284502, 331919, 474170, 569004, 663838, 711255, 948340, 995757, 1327676, 1422510, 1659595, 1991514, 2845020, 3319190, 3983028, 4978785, 6638380, 9957570, 19915140]

約数ペア:

[(1, 19915140), (2, 9957570), (3, 6638380), (4, 4978785), (5, 3983028), (6, 3319190), (7, 2845020), (10, 1991514), (12, 1659595), (14, 1422510), (15, 1327676), (20, 995757), (21, 948340), (28, 711255), (30, 663838), (35, 569004), (42, 474170), (60, 331919), (70, 284502), (84, 237085), (105, 189668), (140, 142251), (210, 94834), (420, 47417)]