20010700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 46872000

約数和(自身を除く): 26861300

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 79, 85, 100, 149, 158, 170, 298, 316, 340, 395, 425, 596, 745, 790, 850, 1343, 1490, 1580, 1700, 1975, 2533, 2686, 2980, 3725, 3950, 5066, 5372, 6715, 7450, 7900, 10132, 11771, 12665, 13430, 14900, 23542, 25330, 26860, 33575, 47084, 50660, 58855, 63325, 67150, 117710, 126650, 134300, 200107, 235420, 253300, 294275, 400214, 588550, 800428, 1000535, 1177100, 2001070, 4002140, 5002675, 10005350, 20010700]

約数ペア:

[(1, 20010700), (2, 10005350), (4, 5002675), (5, 4002140), (10, 2001070), (17, 1177100), (20, 1000535), (25, 800428), (34, 588550), (50, 400214), (68, 294275), (79, 253300), (85, 235420), (100, 200107), (149, 134300), (158, 126650), (170, 117710), (298, 67150), (316, 63325), (340, 58855), (395, 50660), (425, 47084), (596, 33575), (745, 26860), (790, 25330), (850, 23542), (1343, 14900), (1490, 13430), (1580, 12665), (1700, 11771), (1975, 10132), (2533, 7900), (2686, 7450), (2980, 6715), (3725, 5372), (3950, 5066)]