42004000

素因数分解:

$2^5\times 5^3\times {\mathrm{10501}}^1$

素因数の和:10526

約数の個数: 48

約数和(自身を含む): 103213656

約数和(自身を除く): 61209656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 10501, 21002, 42004, 52505, 84008, 105010, 168016, 210020, 262525, 336032, 420040, 525050, 840080, 1050100, 1312625, 1680160, 2100200, 2625250, 4200400, 5250500, 8400800, 10501000, 21002000, 42004000]

約数ペア:

[(1, 42004000), (2, 21002000), (4, 10501000), (5, 8400800), (8, 5250500), (10, 4200400), (16, 2625250), (20, 2100200), (25, 1680160), (32, 1312625), (40, 1050100), (50, 840080), (80, 525050), (100, 420040), (125, 336032), (160, 262525), (200, 210020), (250, 168016), (400, 105010), (500, 84008), (800, 52505), (1000, 42004), (2000, 21002), (4000, 10501)]