18194590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 37635840

約数和(自身を除く): 19441250

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 43, 85, 86, 95, 131, 170, 190, 215, 262, 323, 430, 646, 655, 731, 817, 1310, 1462, 1615, 1634, 2227, 2489, 3230, 3655, 4085, 4454, 4978, 5633, 7310, 8170, 11135, 11266, 12445, 13889, 22270, 24890, 27778, 28165, 42313, 56330, 69445, 84626, 95761, 107027, 138890, 191522, 211565, 214054, 423130, 478805, 535135, 957610, 1070270, 1819459, 3638918, 9097295, 18194590]

約数ペア:

[(1, 18194590), (2, 9097295), (5, 3638918), (10, 1819459), (17, 1070270), (19, 957610), (34, 535135), (38, 478805), (43, 423130), (85, 214054), (86, 211565), (95, 191522), (131, 138890), (170, 107027), (190, 95761), (215, 84626), (262, 69445), (323, 56330), (430, 42313), (646, 28165), (655, 27778), (731, 24890), (817, 22270), (1310, 13889), (1462, 12445), (1615, 11266), (1634, 11135), (2227, 8170), (2489, 7310), (3230, 5633), (3655, 4978), (4085, 4454)]