1440400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1$

素因数の和:308

約数の個数: 60

約数和(自身を含む): 3740212

約数和(自身を除く): 2299812

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 277, 325, 400, 520, 554, 650, 1040, 1108, 1300, 1385, 2216, 2600, 2770, 3601, 4432, 5200, 5540, 6925, 7202, 11080, 13850, 14404, 18005, 22160, 27700, 28808, 36010, 55400, 57616, 72020, 90025, 110800, 144040, 180050, 288080, 360100, 720200, 1440400]

約数ペア:

[(1, 1440400), (2, 720200), (4, 360100), (5, 288080), (8, 180050), (10, 144040), (13, 110800), (16, 90025), (20, 72020), (25, 57616), (26, 55400), (40, 36010), (50, 28808), (52, 27700), (65, 22160), (80, 18005), (100, 14404), (104, 13850), (130, 11080), (200, 7202), (208, 6925), (260, 5540), (277, 5200), (325, 4432), (400, 3601), (520, 2770), (554, 2600), (650, 2216), (1040, 1385), (1108, 1300)]