19391720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 45954000

約数和(自身を除く): 26562280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 73, 116, 145, 146, 229, 232, 290, 292, 365, 458, 580, 584, 730, 916, 1145, 1160, 1460, 1832, 2117, 2290, 2920, 4234, 4580, 6641, 8468, 9160, 10585, 13282, 16717, 16936, 21170, 26564, 33205, 33434, 42340, 53128, 66410, 66868, 83585, 84680, 132820, 133736, 167170, 265640, 334340, 484793, 668680, 969586, 1939172, 2423965, 3878344, 4847930, 9695860, 19391720]

約数ペア:

[(1, 19391720), (2, 9695860), (4, 4847930), (5, 3878344), (8, 2423965), (10, 1939172), (20, 969586), (29, 668680), (40, 484793), (58, 334340), (73, 265640), (116, 167170), (145, 133736), (146, 132820), (229, 84680), (232, 83585), (290, 66868), (292, 66410), (365, 53128), (458, 42340), (580, 33434), (584, 33205), (730, 26564), (916, 21170), (1145, 16936), (1160, 16717), (1460, 13282), (1832, 10585), (2117, 9160), (2290, 8468), (2920, 6641), (4234, 4580)]