20644156

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 41686848

約数和(自身を除く): 21042692

約数列:

[1, 2, 4, 13, 23, 26, 41, 46, 52, 82, 92, 164, 299, 421, 533, 598, 842, 943, 1066, 1196, 1684, 1886, 2132, 3772, 5473, 9683, 10946, 12259, 17261, 19366, 21892, 24518, 34522, 38732, 49036, 69044, 125879, 224393, 251758, 397003, 448786, 503516, 794006, 897572, 1588012, 5161039, 10322078, 20644156]

約数ペア:

[(1, 20644156), (2, 10322078), (4, 5161039), (13, 1588012), (23, 897572), (26, 794006), (41, 503516), (46, 448786), (52, 397003), (82, 251758), (92, 224393), (164, 125879), (299, 69044), (421, 49036), (533, 38732), (598, 34522), (842, 24518), (943, 21892), (1066, 19366), (1196, 17261), (1684, 12259), (1886, 10946), (2132, 9683), (3772, 5473)]