20010705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 19664175

約数列:

[1, 3, 5, 11, 13, 15, 19, 33, 39, 55, 57, 65, 95, 143, 165, 195, 209, 247, 285, 429, 491, 627, 715, 741, 1045, 1235, 1473, 2145, 2455, 2717, 3135, 3705, 5401, 6383, 7365, 8151, 9329, 13585, 16203, 19149, 27005, 27987, 31915, 40755, 46645, 70213, 81015, 95745, 102619, 121277, 139935, 210639, 307857, 351065, 363831, 513095, 606385, 1053195, 1334047, 1539285, 1819155, 4002141, 6670235, 20010705]

約数ペア:

[(1, 20010705), (3, 6670235), (5, 4002141), (11, 1819155), (13, 1539285), (15, 1334047), (19, 1053195), (33, 606385), (39, 513095), (55, 363831), (57, 351065), (65, 307857), (95, 210639), (143, 139935), (165, 121277), (195, 102619), (209, 95745), (247, 81015), (285, 70213), (429, 46645), (491, 40755), (627, 31915), (715, 27987), (741, 27005), (1045, 19149), (1235, 16203), (1473, 13585), (2145, 9329), (2455, 8151), (2717, 7365), (3135, 6383), (3705, 5401)]