205780328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 427056000

約数和(自身を除く): 221275672

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 163, 199, 244, 326, 398, 488, 652, 793, 796, 1304, 1586, 1592, 2119, 2587, 3172, 4238, 5174, 6344, 8476, 9943, 10348, 12139, 16952, 19886, 20696, 24278, 32437, 39772, 48556, 64874, 79544, 97112, 129259, 129748, 157807, 258518, 259496, 315614, 421681, 517036, 631228, 843362, 1034072, 1262456, 1686724, 1978657, 3373448, 3957314, 7914628, 15829256, 25722541, 51445082, 102890164, 205780328]

約数ペア:

[(1, 205780328), (2, 102890164), (4, 51445082), (8, 25722541), (13, 15829256), (26, 7914628), (52, 3957314), (61, 3373448), (104, 1978657), (122, 1686724), (163, 1262456), (199, 1034072), (244, 843362), (326, 631228), (398, 517036), (488, 421681), (652, 315614), (793, 259496), (796, 258518), (1304, 157807), (1586, 129748), (1592, 129259), (2119, 97112), (2587, 79544), (3172, 64874), (4238, 48556), (5174, 39772), (6344, 32437), (8476, 24278), (9943, 20696), (10348, 19886), (12139, 16952)]