78804520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^3\times {\mathrm{401}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 188859600

約数和(自身を除く): 110055080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 401, 578, 680, 802, 1156, 1445, 1604, 2005, 2312, 2890, 3208, 4010, 4913, 5780, 6817, 8020, 9826, 11560, 13634, 16040, 19652, 24565, 27268, 34085, 39304, 49130, 54536, 68170, 98260, 115889, 136340, 196520, 231778, 272680, 463556, 579445, 927112, 1158890, 1970113, 2317780, 3940226, 4635560, 7880452, 9850565, 15760904, 19701130, 39402260, 78804520]

約数ペア:

[(1, 78804520), (2, 39402260), (4, 19701130), (5, 15760904), (8, 9850565), (10, 7880452), (17, 4635560), (20, 3940226), (34, 2317780), (40, 1970113), (68, 1158890), (85, 927112), (136, 579445), (170, 463556), (289, 272680), (340, 231778), (401, 196520), (578, 136340), (680, 115889), (802, 98260), (1156, 68170), (1445, 54536), (1604, 49130), (2005, 39304), (2312, 34085), (2890, 27268), (3208, 24565), (4010, 19652), (4913, 16040), (5780, 13634), (6817, 11560), (8020, 9826)]