18984992

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{971}}^1$

素因数の和:1041

約数の個数: 48

約数和(自身を含む): 41150592

約数和(自身を除く): 22165600

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 94, 104, 188, 208, 376, 416, 611, 752, 971, 1222, 1504, 1942, 2444, 3884, 4888, 7768, 9776, 12623, 15536, 19552, 25246, 31072, 45637, 50492, 91274, 100984, 182548, 201968, 365096, 403936, 593281, 730192, 1186562, 1460384, 2373124, 4746248, 9492496, 18984992]

約数ペア:

[(1, 18984992), (2, 9492496), (4, 4746248), (8, 2373124), (13, 1460384), (16, 1186562), (26, 730192), (32, 593281), (47, 403936), (52, 365096), (94, 201968), (104, 182548), (188, 100984), (208, 91274), (376, 50492), (416, 45637), (611, 31072), (752, 25246), (971, 19552), (1222, 15536), (1504, 12623), (1942, 9776), (2444, 7768), (3884, 4888)]