20841680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:324

約数の個数: 80

約数和(自身を含む): 51853824

約数和(自身を除く): 31012144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 47, 80, 92, 94, 115, 184, 188, 230, 235, 241, 368, 376, 460, 470, 482, 752, 920, 940, 964, 1081, 1205, 1840, 1880, 1928, 2162, 2410, 3760, 3856, 4324, 4820, 5405, 5543, 8648, 9640, 10810, 11086, 11327, 17296, 19280, 21620, 22172, 22654, 27715, 43240, 44344, 45308, 55430, 56635, 86480, 88688, 90616, 110860, 113270, 181232, 221720, 226540, 260521, 443440, 453080, 521042, 906160, 1042084, 1302605, 2084168, 2605210, 4168336, 5210420, 10420840, 20841680]

約数ペア:

[(1, 20841680), (2, 10420840), (4, 5210420), (5, 4168336), (8, 2605210), (10, 2084168), (16, 1302605), (20, 1042084), (23, 906160), (40, 521042), (46, 453080), (47, 443440), (80, 260521), (92, 226540), (94, 221720), (115, 181232), (184, 113270), (188, 110860), (230, 90616), (235, 88688), (241, 86480), (368, 56635), (376, 55430), (460, 45308), (470, 44344), (482, 43240), (752, 27715), (920, 22654), (940, 22172), (964, 21620), (1081, 19280), (1205, 17296), (1840, 11327), (1880, 11086), (1928, 10810), (2162, 9640), (2410, 8648), (3760, 5543), (3856, 5405), (4324, 4820)]