21907620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17387}}^1$

素因数の和:17409

約数の個数: 72

約数和(自身を含む): 75950784

約数和(自身を除く): 54043164

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17387, 34774, 52161, 69548, 86935, 104322, 121709, 156483, 173870, 208644, 243418, 260805, 312966, 347740, 365127, 486836, 521610, 608545, 625932, 730254, 782415, 1043220, 1095381, 1217090, 1460508, 1564830, 1825635, 2190762, 2434180, 3129660, 3651270, 4381524, 5476905, 7302540, 10953810, 21907620]

約数ペア:

[(1, 21907620), (2, 10953810), (3, 7302540), (4, 5476905), (5, 4381524), (6, 3651270), (7, 3129660), (9, 2434180), (10, 2190762), (12, 1825635), (14, 1564830), (15, 1460508), (18, 1217090), (20, 1095381), (21, 1043220), (28, 782415), (30, 730254), (35, 625932), (36, 608545), (42, 521610), (45, 486836), (60, 365127), (63, 347740), (70, 312966), (84, 260805), (90, 243418), (105, 208644), (126, 173870), (140, 156483), (180, 121709), (210, 104322), (252, 86935), (315, 69548), (420, 52161), (630, 34774), (1260, 17387)]