201220400

素因数分解:

$2^4\times 5^2\times {\mathrm{571}}^1\times {\mathrm{881}}^1$

素因数の和:1470

約数の個数: 60

約数和(自身を含む): 484828344

約数和(自身を除く): 283607944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 571, 881, 1142, 1762, 2284, 2855, 3524, 4405, 4568, 5710, 7048, 8810, 9136, 11420, 14096, 14275, 17620, 22025, 22840, 28550, 35240, 44050, 45680, 57100, 70480, 88100, 114200, 176200, 228400, 352400, 503051, 1006102, 2012204, 2515255, 4024408, 5030510, 8048816, 10061020, 12576275, 20122040, 25152550, 40244080, 50305100, 100610200, 201220400]

約数ペア:

[(1, 201220400), (2, 100610200), (4, 50305100), (5, 40244080), (8, 25152550), (10, 20122040), (16, 12576275), (20, 10061020), (25, 8048816), (40, 5030510), (50, 4024408), (80, 2515255), (100, 2012204), (200, 1006102), (400, 503051), (571, 352400), (881, 228400), (1142, 176200), (1762, 114200), (2284, 88100), (2855, 70480), (3524, 57100), (4405, 45680), (4568, 44050), (5710, 35240), (7048, 28550), (8810, 22840), (9136, 22025), (11420, 17620), (14096, 14275)]