21000724832

素因数分解:

$2^5\times {\mathrm{503}}^1\times {\mathrm{569}}^1\times {\mathrm{2293}}^1$

素因数の和:3375

約数の個数: 48

約数和(自身を含む): 41518280160

約数和(自身を除く): 20517555328

約数列:

[1, 2, 4, 8, 16, 32, 503, 569, 1006, 1138, 2012, 2276, 2293, 4024, 4552, 4586, 8048, 9104, 9172, 16096, 18208, 18344, 36688, 73376, 286207, 572414, 1144828, 1153379, 1304717, 2289656, 2306758, 2609434, 4579312, 4613516, 5218868, 9158624, 9227032, 10437736, 18454064, 20875472, 36908128, 41750944, 656272651, 1312545302, 2625090604, 5250181208, 10500362416, 21000724832]

約数ペア:

[(1, 21000724832), (2, 10500362416), (4, 5250181208), (8, 2625090604), (16, 1312545302), (32, 656272651), (503, 41750944), (569, 36908128), (1006, 20875472), (1138, 18454064), (2012, 10437736), (2276, 9227032), (2293, 9158624), (4024, 5218868), (4552, 4613516), (4586, 4579312), (8048, 2609434), (9104, 2306758), (9172, 2289656), (16096, 1304717), (18208, 1153379), (18344, 1144828), (36688, 572414), (73376, 286207)]