81982160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4637}}^1$

素因数の和:4680

約数の個数: 80

約数和(自身を含む): 217392336

約数和(自身を除く): 135410176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 4637, 8840, 9274, 17680, 18548, 23185, 37096, 46370, 60281, 74192, 78829, 92740, 120562, 157658, 185480, 241124, 301405, 315316, 370960, 394145, 482248, 602810, 630632, 788290, 964496, 1024777, 1205620, 1261264, 1576580, 2049554, 2411240, 3153160, 4099108, 4822480, 5123885, 6306320, 8198216, 10247770, 16396432, 20495540, 40991080, 81982160]

約数ペア:

[(1, 81982160), (2, 40991080), (4, 20495540), (5, 16396432), (8, 10247770), (10, 8198216), (13, 6306320), (16, 5123885), (17, 4822480), (20, 4099108), (26, 3153160), (34, 2411240), (40, 2049554), (52, 1576580), (65, 1261264), (68, 1205620), (80, 1024777), (85, 964496), (104, 788290), (130, 630632), (136, 602810), (170, 482248), (208, 394145), (221, 370960), (260, 315316), (272, 301405), (340, 241124), (442, 185480), (520, 157658), (680, 120562), (884, 92740), (1040, 78829), (1105, 74192), (1360, 60281), (1768, 46370), (2210, 37096), (3536, 23185), (4420, 18548), (4637, 17680), (8840, 9274)]