21312780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5003}}^1$

素因数の和:5086

約数の個数: 48

約数和(自身を含む): 60528384

約数和(自身を除く): 39215604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5003, 10006, 15009, 20012, 25015, 30018, 50030, 60036, 75045, 100060, 150090, 300180, 355213, 710426, 1065639, 1420852, 1776065, 2131278, 3552130, 4262556, 5328195, 7104260, 10656390, 21312780]

約数ペア:

[(1, 21312780), (2, 10656390), (3, 7104260), (4, 5328195), (5, 4262556), (6, 3552130), (10, 2131278), (12, 1776065), (15, 1420852), (20, 1065639), (30, 710426), (60, 355213), (71, 300180), (142, 150090), (213, 100060), (284, 75045), (355, 60036), (426, 50030), (710, 30018), (852, 25015), (1065, 20012), (1420, 15009), (2130, 10006), (4260, 5003)]