21312540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{709}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 65126880

約数和(自身を除く): 43814340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 167, 180, 334, 501, 668, 709, 835, 1002, 1418, 1503, 1670, 2004, 2127, 2505, 2836, 3006, 3340, 3545, 4254, 5010, 6012, 6381, 7090, 7515, 8508, 10020, 10635, 12762, 14180, 15030, 21270, 25524, 30060, 31905, 42540, 63810, 118403, 127620, 236806, 355209, 473612, 592015, 710418, 1065627, 1184030, 1420836, 1776045, 2131254, 2368060, 3552090, 4262508, 5328135, 7104180, 10656270, 21312540]

約数ペア:

[(1, 21312540), (2, 10656270), (3, 7104180), (4, 5328135), (5, 4262508), (6, 3552090), (9, 2368060), (10, 2131254), (12, 1776045), (15, 1420836), (18, 1184030), (20, 1065627), (30, 710418), (36, 592015), (45, 473612), (60, 355209), (90, 236806), (167, 127620), (180, 118403), (334, 63810), (501, 42540), (668, 31905), (709, 30060), (835, 25524), (1002, 21270), (1418, 15030), (1503, 14180), (1670, 12762), (2004, 10635), (2127, 10020), (2505, 8508), (2836, 7515), (3006, 7090), (3340, 6381), (3545, 6012), (4254, 5010)]