21102110

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 38968992

約数和(自身を除く): 17866882

約数列:

[1, 2, 5, 10, 73, 137, 146, 211, 274, 365, 422, 685, 730, 1055, 1370, 2110, 10001, 15403, 20002, 28907, 30806, 50005, 57814, 77015, 100010, 144535, 154030, 289070, 2110211, 4220422, 10551055, 21102110]

約数ペア:

[(1, 21102110), (2, 10551055), (5, 4220422), (10, 2110211), (73, 289070), (137, 154030), (146, 144535), (211, 100010), (274, 77015), (365, 57814), (422, 50005), (685, 30806), (730, 28907), (1055, 20002), (1370, 15403), (2110, 10001)]