20967180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26881}}^1$

素因数の和:26906

約数の個数: 48

約数和(自身を含む): 63226464

約数和(自身を除く): 42259284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26881, 53762, 80643, 107524, 134405, 161286, 268810, 322572, 349453, 403215, 537620, 698906, 806430, 1048359, 1397812, 1612860, 1747265, 2096718, 3494530, 4193436, 5241795, 6989060, 10483590, 20967180]

約数ペア:

[(1, 20967180), (2, 10483590), (3, 6989060), (4, 5241795), (5, 4193436), (6, 3494530), (10, 2096718), (12, 1747265), (13, 1612860), (15, 1397812), (20, 1048359), (26, 806430), (30, 698906), (39, 537620), (52, 403215), (60, 349453), (65, 322572), (78, 268810), (130, 161286), (156, 134405), (195, 107524), (260, 80643), (390, 53762), (780, 26881)]