40000400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9091}}^1$

素因数の和:9120

約数の個数: 60

約数和(自身を含む): 104848944

約数和(自身を除く): 64848544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 9091, 18182, 36364, 45455, 72728, 90910, 100001, 145456, 181820, 200002, 227275, 363640, 400004, 454550, 500005, 727280, 800008, 909100, 1000010, 1600016, 1818200, 2000020, 2500025, 3636400, 4000040, 5000050, 8000080, 10000100, 20000200, 40000400]

約数ペア:

[(1, 40000400), (2, 20000200), (4, 10000100), (5, 8000080), (8, 5000050), (10, 4000040), (11, 3636400), (16, 2500025), (20, 2000020), (22, 1818200), (25, 1600016), (40, 1000010), (44, 909100), (50, 800008), (55, 727280), (80, 500005), (88, 454550), (100, 400004), (110, 363640), (176, 227275), (200, 200002), (220, 181820), (275, 145456), (400, 100001), (440, 90910), (550, 72728), (880, 45455), (1100, 36364), (2200, 18182), (4400, 9091)]