20878830

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11047}}^1$

素因数の和:11070

約数の個数: 64

約数和(自身を含む): 63636480

約数和(自身を除く): 42757650

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11047, 22094, 33141, 55235, 66282, 77329, 99423, 110470, 154658, 165705, 198846, 231987, 298269, 331410, 386645, 463974, 497115, 596538, 695961, 773290, 994230, 1159935, 1391922, 1491345, 2087883, 2319870, 2982690, 3479805, 4175766, 6959610, 10439415, 20878830]

約数ペア:

[(1, 20878830), (2, 10439415), (3, 6959610), (5, 4175766), (6, 3479805), (7, 2982690), (9, 2319870), (10, 2087883), (14, 1491345), (15, 1391922), (18, 1159935), (21, 994230), (27, 773290), (30, 695961), (35, 596538), (42, 497115), (45, 463974), (54, 386645), (63, 331410), (70, 298269), (90, 231987), (105, 198846), (126, 165705), (135, 154658), (189, 110470), (210, 99423), (270, 77329), (315, 66282), (378, 55235), (630, 33141), (945, 22094), (1890, 11047)]