68642820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20071}}^1$

素因数の和:20105

約数の個数: 72

約数和(自身を含む): 219186240

約数和(自身を除く): 150543420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 20071, 40142, 60213, 80284, 100355, 120426, 180639, 200710, 240852, 301065, 361278, 381349, 401420, 602130, 722556, 762698, 903195, 1144047, 1204260, 1525396, 1806390, 1906745, 2288094, 3432141, 3612780, 3813490, 4576188, 5720235, 6864282, 7626980, 11440470, 13728564, 17160705, 22880940, 34321410, 68642820]

約数ペア:

[(1, 68642820), (2, 34321410), (3, 22880940), (4, 17160705), (5, 13728564), (6, 11440470), (9, 7626980), (10, 6864282), (12, 5720235), (15, 4576188), (18, 3813490), (19, 3612780), (20, 3432141), (30, 2288094), (36, 1906745), (38, 1806390), (45, 1525396), (57, 1204260), (60, 1144047), (76, 903195), (90, 762698), (95, 722556), (114, 602130), (171, 401420), (180, 381349), (190, 361278), (228, 301065), (285, 240852), (342, 200710), (380, 180639), (570, 120426), (684, 100355), (855, 80284), (1140, 60213), (1710, 40142), (3420, 20071)]