28691920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^3\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 80

約数和(自身を含む): 71848080

約数和(自身を除く): 43156160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 73, 80, 85, 136, 146, 170, 272, 289, 292, 340, 365, 578, 584, 680, 730, 1156, 1168, 1241, 1360, 1445, 1460, 2312, 2482, 2890, 2920, 4624, 4913, 4964, 5780, 5840, 6205, 9826, 9928, 11560, 12410, 19652, 19856, 21097, 23120, 24565, 24820, 39304, 42194, 49130, 49640, 78608, 84388, 98260, 99280, 105485, 168776, 196520, 210970, 337552, 358649, 393040, 421940, 717298, 843880, 1434596, 1687760, 1793245, 2869192, 3586490, 5738384, 7172980, 14345960, 28691920]

約数ペア:

[(1, 28691920), (2, 14345960), (4, 7172980), (5, 5738384), (8, 3586490), (10, 2869192), (16, 1793245), (17, 1687760), (20, 1434596), (34, 843880), (40, 717298), (68, 421940), (73, 393040), (80, 358649), (85, 337552), (136, 210970), (146, 196520), (170, 168776), (272, 105485), (289, 99280), (292, 98260), (340, 84388), (365, 78608), (578, 49640), (584, 49130), (680, 42194), (730, 39304), (1156, 24820), (1168, 24565), (1241, 23120), (1360, 21097), (1445, 19856), (1460, 19652), (2312, 12410), (2482, 11560), (2890, 9928), (2920, 9826), (4624, 6205), (4913, 5840), (4964, 5780)]