21551250

素因数分解:

$2^1\times 3^1\times 5^4\times 7^1\times {\mathrm{821}}^1$

素因数の和:853

約数の個数: 80

約数和(自身を含む): 61630272

約数和(自身を除く): 40079022

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 125, 150, 175, 210, 250, 350, 375, 525, 625, 750, 821, 875, 1050, 1250, 1642, 1750, 1875, 2463, 2625, 3750, 4105, 4375, 4926, 5250, 5747, 8210, 8750, 11494, 12315, 13125, 17241, 20525, 24630, 26250, 28735, 34482, 41050, 57470, 61575, 86205, 102625, 123150, 143675, 172410, 205250, 287350, 307875, 431025, 513125, 615750, 718375, 862050, 1026250, 1436750, 1539375, 2155125, 3078750, 3591875, 4310250, 7183750, 10775625, 21551250]

約数ペア:

[(1, 21551250), (2, 10775625), (3, 7183750), (5, 4310250), (6, 3591875), (7, 3078750), (10, 2155125), (14, 1539375), (15, 1436750), (21, 1026250), (25, 862050), (30, 718375), (35, 615750), (42, 513125), (50, 431025), (70, 307875), (75, 287350), (105, 205250), (125, 172410), (150, 143675), (175, 123150), (210, 102625), (250, 86205), (350, 61575), (375, 57470), (525, 41050), (625, 34482), (750, 28735), (821, 26250), (875, 24630), (1050, 20525), (1250, 17241), (1642, 13125), (1750, 12315), (1875, 11494), (2463, 8750), (2625, 8210), (3750, 5747), (4105, 5250), (4375, 4926)]