664998980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1\times {\mathrm{2347}}^1$

素因数の和:2844

約数の個数: 48

約数和(自身を含む): 1445316096

約数和(自身を除く): 780317116

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 457, 620, 914, 1828, 2285, 2347, 4570, 4694, 9140, 9388, 11735, 14167, 23470, 28334, 46940, 56668, 70835, 72757, 141670, 145514, 283340, 291028, 363785, 727570, 1072579, 1455140, 2145158, 4290316, 5362895, 10725790, 21451580, 33249949, 66499898, 132999796, 166249745, 332499490, 664998980]

約数ペア:

[(1, 664998980), (2, 332499490), (4, 166249745), (5, 132999796), (10, 66499898), (20, 33249949), (31, 21451580), (62, 10725790), (124, 5362895), (155, 4290316), (310, 2145158), (457, 1455140), (620, 1072579), (914, 727570), (1828, 363785), (2285, 291028), (2347, 283340), (4570, 145514), (4694, 141670), (9140, 72757), (9388, 70835), (11735, 56668), (14167, 46940), (23470, 28334)]