81084880

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:532

約数の個数: 80

約数和(自身を含む): 196862400

約数和(自身を除く): 115777520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 59, 80, 82, 118, 164, 205, 236, 295, 328, 410, 419, 472, 590, 656, 820, 838, 944, 1180, 1640, 1676, 2095, 2360, 2419, 3280, 3352, 4190, 4720, 4838, 6704, 8380, 9676, 12095, 16760, 17179, 19352, 24190, 24721, 33520, 34358, 38704, 48380, 49442, 68716, 85895, 96760, 98884, 123605, 137432, 171790, 193520, 197768, 247210, 274864, 343580, 395536, 494420, 687160, 988840, 1013561, 1374320, 1977680, 2027122, 4054244, 5067805, 8108488, 10135610, 16216976, 20271220, 40542440, 81084880]

約数ペア:

[(1, 81084880), (2, 40542440), (4, 20271220), (5, 16216976), (8, 10135610), (10, 8108488), (16, 5067805), (20, 4054244), (40, 2027122), (41, 1977680), (59, 1374320), (80, 1013561), (82, 988840), (118, 687160), (164, 494420), (205, 395536), (236, 343580), (295, 274864), (328, 247210), (410, 197768), (419, 193520), (472, 171790), (590, 137432), (656, 123605), (820, 98884), (838, 96760), (944, 85895), (1180, 68716), (1640, 49442), (1676, 48380), (2095, 38704), (2360, 34358), (2419, 33520), (3280, 24721), (3352, 24190), (4190, 19352), (4720, 17179), (4838, 16760), (6704, 12095), (8380, 9676)]