18193980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43319}}^1$

素因数の和:43338

約数の個数: 48

約数和(自身を含む): 58222080

約数和(自身を除く): 40028100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43319, 86638, 129957, 173276, 216595, 259914, 303233, 433190, 519828, 606466, 649785, 866380, 909699, 1212932, 1299570, 1516165, 1819398, 2599140, 3032330, 3638796, 4548495, 6064660, 9096990, 18193980]

約数ペア:

[(1, 18193980), (2, 9096990), (3, 6064660), (4, 4548495), (5, 3638796), (6, 3032330), (7, 2599140), (10, 1819398), (12, 1516165), (14, 1299570), (15, 1212932), (20, 909699), (21, 866380), (28, 649785), (30, 606466), (35, 519828), (42, 433190), (60, 303233), (70, 259914), (84, 216595), (105, 173276), (140, 129957), (210, 86638), (420, 43319)]