31918520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{643}}^1$

素因数の和:744

約数の個数: 64

約数和(自身を含む): 77202720

約数和(自身を除く): 45284200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 73, 85, 136, 146, 170, 292, 340, 365, 584, 643, 680, 730, 1241, 1286, 1460, 2482, 2572, 2920, 3215, 4964, 5144, 6205, 6430, 9928, 10931, 12410, 12860, 21862, 24820, 25720, 43724, 46939, 49640, 54655, 87448, 93878, 109310, 187756, 218620, 234695, 375512, 437240, 469390, 797963, 938780, 1595926, 1877560, 3191852, 3989815, 6383704, 7979630, 15959260, 31918520]

約数ペア:

[(1, 31918520), (2, 15959260), (4, 7979630), (5, 6383704), (8, 3989815), (10, 3191852), (17, 1877560), (20, 1595926), (34, 938780), (40, 797963), (68, 469390), (73, 437240), (85, 375512), (136, 234695), (146, 218620), (170, 187756), (292, 109310), (340, 93878), (365, 87448), (584, 54655), (643, 49640), (680, 46939), (730, 43724), (1241, 25720), (1286, 24820), (1460, 21862), (2482, 12860), (2572, 12410), (2920, 10931), (3215, 9928), (4964, 6430), (5144, 6205)]