1600040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 4127760

約数和(自身を除く): 2527720

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 181, 221, 260, 340, 362, 442, 520, 680, 724, 884, 905, 1105, 1448, 1768, 1810, 2210, 2353, 3077, 3620, 4420, 4706, 6154, 7240, 8840, 9412, 11765, 12308, 15385, 18824, 23530, 24616, 30770, 40001, 47060, 61540, 80002, 94120, 123080, 160004, 200005, 320008, 400010, 800020, 1600040]

約数ペア:

[(1, 1600040), (2, 800020), (4, 400010), (5, 320008), (8, 200005), (10, 160004), (13, 123080), (17, 94120), (20, 80002), (26, 61540), (34, 47060), (40, 40001), (52, 30770), (65, 24616), (68, 23530), (85, 18824), (104, 15385), (130, 12308), (136, 11765), (170, 9412), (181, 8840), (221, 7240), (260, 6154), (340, 4706), (362, 4420), (442, 3620), (520, 3077), (680, 2353), (724, 2210), (884, 1810), (905, 1768), (1105, 1448)]