21154756

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23552060

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 107, 161, 214, 307, 322, 428, 614, 644, 749, 1228, 1498, 2149, 2461, 2996, 4298, 4922, 7061, 8596, 9844, 14122, 17227, 28244, 32849, 34454, 49427, 65698, 68908, 98854, 131396, 197708, 229943, 459886, 755527, 919772, 1511054, 3022108, 5288689, 10577378, 21154756]

約数ペア:

[(1, 21154756), (2, 10577378), (4, 5288689), (7, 3022108), (14, 1511054), (23, 919772), (28, 755527), (46, 459886), (92, 229943), (107, 197708), (161, 131396), (214, 98854), (307, 68908), (322, 65698), (428, 49427), (614, 34454), (644, 32849), (749, 28244), (1228, 17227), (1498, 14122), (2149, 9844), (2461, 8596), (2996, 7061), (4298, 4922)]