21360160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7853}}^1$

素因数の和:7885

約数の個数: 48

約数和(自身を含む): 53438616

約数和(自身を除く): 32078456

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7853, 15706, 31412, 39265, 62824, 78530, 125648, 133501, 157060, 251296, 267002, 314120, 534004, 628240, 667505, 1068008, 1256480, 1335010, 2136016, 2670020, 4272032, 5340040, 10680080, 21360160]

約数ペア:

[(1, 21360160), (2, 10680080), (4, 5340040), (5, 4272032), (8, 2670020), (10, 2136016), (16, 1335010), (17, 1256480), (20, 1068008), (32, 667505), (34, 628240), (40, 534004), (68, 314120), (80, 267002), (85, 251296), (136, 157060), (160, 133501), (170, 125648), (272, 78530), (340, 62824), (544, 39265), (680, 31412), (1360, 15706), (2720, 7853)]