19918500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^2\times {\mathrm{271}}^1$

素因数の和:307

約数の個数: 144

約数和(自身を含む): 67721472

約数和(自身を除く): 47802972

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 49, 50, 60, 70, 75, 84, 98, 100, 105, 125, 140, 147, 150, 175, 196, 210, 245, 250, 271, 294, 300, 350, 375, 420, 490, 500, 525, 542, 588, 700, 735, 750, 813, 875, 980, 1050, 1084, 1225, 1355, 1470, 1500, 1626, 1750, 1897, 2100, 2450, 2625, 2710, 2940, 3252, 3500, 3675, 3794, 4065, 4900, 5250, 5420, 5691, 6125, 6775, 7350, 7588, 8130, 9485, 10500, 11382, 12250, 13279, 13550, 14700, 16260, 18375, 18970, 20325, 22764, 24500, 26558, 27100, 28455, 33875, 36750, 37940, 39837, 40650, 47425, 53116, 56910, 66395, 67750, 73500, 79674, 81300, 94850, 101625, 113820, 132790, 135500, 142275, 159348, 189700, 199185, 203250, 237125, 265580, 284550, 331975, 398370, 406500, 474250, 569100, 663950, 711375, 796740, 948500, 995925, 1327900, 1422750, 1659875, 1991850, 2845500, 3319750, 3983700, 4979625, 6639500, 9959250, 19918500]

約数ペア:

[(1, 19918500), (2, 9959250), (3, 6639500), (4, 4979625), (5, 3983700), (6, 3319750), (7, 2845500), (10, 1991850), (12, 1659875), (14, 1422750), (15, 1327900), (20, 995925), (21, 948500), (25, 796740), (28, 711375), (30, 663950), (35, 569100), (42, 474250), (49, 406500), (50, 398370), (60, 331975), (70, 284550), (75, 265580), (84, 237125), (98, 203250), (100, 199185), (105, 189700), (125, 159348), (140, 142275), (147, 135500), (150, 132790), (175, 113820), (196, 101625), (210, 94850), (245, 81300), (250, 79674), (271, 73500), (294, 67750), (300, 66395), (350, 56910), (375, 53116), (420, 47425), (490, 40650), (500, 39837), (525, 37940), (542, 36750), (588, 33875), (700, 28455), (735, 27100), (750, 26558), (813, 24500), (875, 22764), (980, 20325), (1050, 18970), (1084, 18375), (1225, 16260), (1355, 14700), (1470, 13550), (1500, 13279), (1626, 12250), (1750, 11382), (1897, 10500), (2100, 9485), (2450, 8130), (2625, 7588), (2710, 7350), (2940, 6775), (3252, 6125), (3500, 5691), (3675, 5420), (3794, 5250), (4065, 4900)]