40528780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 88704000

約数和(自身を除く): 48175220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 262, 310, 499, 524, 620, 655, 998, 1310, 1996, 2495, 2620, 4061, 4990, 8122, 9980, 15469, 16244, 20305, 30938, 40610, 61876, 65369, 77345, 81220, 130738, 154690, 261476, 309380, 326845, 653690, 1307380, 2026439, 4052878, 8105756, 10132195, 20264390, 40528780]

約数ペア:

[(1, 40528780), (2, 20264390), (4, 10132195), (5, 8105756), (10, 4052878), (20, 2026439), (31, 1307380), (62, 653690), (124, 326845), (131, 309380), (155, 261476), (262, 154690), (310, 130738), (499, 81220), (524, 77345), (620, 65369), (655, 61876), (998, 40610), (1310, 30938), (1996, 20305), (2495, 16244), (2620, 15469), (4061, 9980), (4990, 8122)]