638963766

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{38711}}^1$

素因数の和:38857

約数の個数: 48

約数和(自身を含む): 1594315008

約数和(自身を除く): 955351242

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1834, 2358, 2751, 5502, 8253, 16506, 38711, 77422, 116133, 232266, 270977, 348399, 541954, 696798, 812931, 1625862, 2438793, 4877586, 5071141, 10142282, 15213423, 30426846, 35497987, 45640269, 70995974, 91280538, 106493961, 212987922, 319481883, 638963766]

約数ペア:

[(1, 638963766), (2, 319481883), (3, 212987922), (6, 106493961), (7, 91280538), (9, 70995974), (14, 45640269), (18, 35497987), (21, 30426846), (42, 15213423), (63, 10142282), (126, 5071141), (131, 4877586), (262, 2438793), (393, 1625862), (786, 812931), (917, 696798), (1179, 541954), (1834, 348399), (2358, 270977), (2751, 232266), (5502, 116133), (8253, 77422), (16506, 38711)]