20583520

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1249}}^1$

素因数の和:1367

約数の個数: 48

約数和(自身を含む): 49140000

約数和(自身を除く): 28556480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1249, 1648, 2060, 2498, 3296, 4120, 4996, 6245, 8240, 9992, 12490, 16480, 19984, 24980, 39968, 49960, 99920, 128647, 199840, 257294, 514588, 643235, 1029176, 1286470, 2058352, 2572940, 4116704, 5145880, 10291760, 20583520]

約数ペア:

[(1, 20583520), (2, 10291760), (4, 5145880), (5, 4116704), (8, 2572940), (10, 2058352), (16, 1286470), (20, 1029176), (32, 643235), (40, 514588), (80, 257294), (103, 199840), (160, 128647), (206, 99920), (412, 49960), (515, 39968), (824, 24980), (1030, 19984), (1249, 16480), (1648, 12490), (2060, 9992), (2498, 8240), (3296, 6245), (4120, 4996)]