128688920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:596

約数の個数: 64

約数和(自身を含む): 296965440

約数和(自身を除く): 168276520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 113, 142, 226, 284, 355, 401, 452, 565, 568, 710, 802, 904, 1130, 1420, 1604, 2005, 2260, 2840, 3208, 4010, 4520, 8020, 8023, 16040, 16046, 28471, 32092, 40115, 45313, 56942, 64184, 80230, 90626, 113884, 142355, 160460, 181252, 226565, 227768, 284710, 320920, 362504, 453130, 569420, 906260, 1138840, 1812520, 3217223, 6434446, 12868892, 16086115, 25737784, 32172230, 64344460, 128688920]

約数ペア:

[(1, 128688920), (2, 64344460), (4, 32172230), (5, 25737784), (8, 16086115), (10, 12868892), (20, 6434446), (40, 3217223), (71, 1812520), (113, 1138840), (142, 906260), (226, 569420), (284, 453130), (355, 362504), (401, 320920), (452, 284710), (565, 227768), (568, 226565), (710, 181252), (802, 160460), (904, 142355), (1130, 113884), (1420, 90626), (1604, 80230), (2005, 64184), (2260, 56942), (2840, 45313), (3208, 40115), (4010, 32092), (4520, 28471), (8020, 16046), (8023, 16040)]