18813750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:227

約数の個数: 80

約数和(自身を含む): 48921840

約数和(自身を除く): 30108090

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 29, 30, 50, 58, 75, 87, 125, 145, 150, 173, 174, 250, 290, 346, 375, 435, 519, 625, 725, 750, 865, 870, 1038, 1250, 1450, 1730, 1875, 2175, 2595, 3625, 3750, 4325, 4350, 5017, 5190, 7250, 8650, 10034, 10875, 12975, 15051, 18125, 21625, 21750, 25085, 25950, 30102, 36250, 43250, 50170, 54375, 64875, 75255, 108125, 108750, 125425, 129750, 150510, 216250, 250850, 324375, 376275, 627125, 648750, 752550, 1254250, 1881375, 3135625, 3762750, 6271250, 9406875, 18813750]

約数ペア:

[(1, 18813750), (2, 9406875), (3, 6271250), (5, 3762750), (6, 3135625), (10, 1881375), (15, 1254250), (25, 752550), (29, 648750), (30, 627125), (50, 376275), (58, 324375), (75, 250850), (87, 216250), (125, 150510), (145, 129750), (150, 125425), (173, 108750), (174, 108125), (250, 75255), (290, 64875), (346, 54375), (375, 50170), (435, 43250), (519, 36250), (625, 30102), (725, 25950), (750, 25085), (865, 21750), (870, 21625), (1038, 18125), (1250, 15051), (1450, 12975), (1730, 10875), (1875, 10034), (2175, 8650), (2595, 7250), (3625, 5190), (3750, 5017), (4325, 4350)]