2158393325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 2971393152

約数和(自身を除く): 812999827

約数列:

[1, 5, 11, 25, 55, 103, 181, 275, 421, 515, 905, 1133, 1991, 2105, 2575, 4525, 4631, 5665, 9955, 10525, 18643, 23155, 28325, 43363, 49775, 76201, 93215, 115775, 205073, 216815, 381005, 466075, 476993, 838211, 1025365, 1084075, 1905025, 2384965, 4191055, 5126825, 7848703, 11924825, 20955275, 39243515, 86335733, 196217575, 431678665, 2158393325]

約数ペア:

[(1, 2158393325), (5, 431678665), (11, 196217575), (25, 86335733), (55, 39243515), (103, 20955275), (181, 11924825), (275, 7848703), (421, 5126825), (515, 4191055), (905, 2384965), (1133, 1905025), (1991, 1084075), (2105, 1025365), (2575, 838211), (4525, 476993), (4631, 466075), (5665, 381005), (9955, 216815), (10525, 205073), (18643, 115775), (23155, 93215), (28325, 76201), (43363, 49775)]