201999740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1\times {\mathrm{401}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 431555040

約数和(自身を除く): 229555300

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 283, 356, 401, 445, 566, 802, 890, 1132, 1415, 1604, 1780, 2005, 2830, 4010, 5660, 8020, 25187, 35689, 50374, 71378, 100748, 113483, 125935, 142756, 178445, 226966, 251870, 356890, 453932, 503740, 567415, 713780, 1134830, 2269660, 10099987, 20199974, 40399948, 50499935, 100999870, 201999740]

約数ペア:

[(1, 201999740), (2, 100999870), (4, 50499935), (5, 40399948), (10, 20199974), (20, 10099987), (89, 2269660), (178, 1134830), (283, 713780), (356, 567415), (401, 503740), (445, 453932), (566, 356890), (802, 251870), (890, 226966), (1132, 178445), (1415, 142756), (1604, 125935), (1780, 113483), (2005, 100748), (2830, 71378), (4010, 50374), (5660, 35689), (8020, 25187)]