20689980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5653}}^1$

素因数の和:5726

約数の個数: 48

約数和(自身を含む): 58892064

約数和(自身を除く): 38202084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5653, 11306, 16959, 22612, 28265, 33918, 56530, 67836, 84795, 113060, 169590, 339180, 344833, 689666, 1034499, 1379332, 1724165, 2068998, 3448330, 4137996, 5172495, 6896660, 10344990, 20689980]

約数ペア:

[(1, 20689980), (2, 10344990), (3, 6896660), (4, 5172495), (5, 4137996), (6, 3448330), (10, 2068998), (12, 1724165), (15, 1379332), (20, 1034499), (30, 689666), (60, 344833), (61, 339180), (122, 169590), (183, 113060), (244, 84795), (305, 67836), (366, 56530), (610, 33918), (732, 28265), (915, 22612), (1220, 16959), (1830, 11306), (3660, 5653)]