19634660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 45386880

約数和(自身を除く): 25752220

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 79, 85, 86, 158, 170, 172, 215, 289, 316, 340, 395, 430, 578, 731, 790, 860, 1156, 1343, 1445, 1462, 1580, 2686, 2890, 2924, 3397, 3655, 5372, 5780, 6715, 6794, 7310, 12427, 13430, 13588, 14620, 16985, 22831, 24854, 26860, 33970, 45662, 49708, 57749, 62135, 67940, 91324, 114155, 115498, 124270, 228310, 230996, 248540, 288745, 456620, 577490, 981733, 1154980, 1963466, 3926932, 4908665, 9817330, 19634660]

約数ペア:

[(1, 19634660), (2, 9817330), (4, 4908665), (5, 3926932), (10, 1963466), (17, 1154980), (20, 981733), (34, 577490), (43, 456620), (68, 288745), (79, 248540), (85, 230996), (86, 228310), (158, 124270), (170, 115498), (172, 114155), (215, 91324), (289, 67940), (316, 62135), (340, 57749), (395, 49708), (430, 45662), (578, 33970), (731, 26860), (790, 24854), (860, 22831), (1156, 16985), (1343, 14620), (1445, 13588), (1462, 13430), (1580, 12427), (2686, 7310), (2890, 6794), (2924, 6715), (3397, 5780), (3655, 5372)]