18777590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 37630656

約数和(自身を除く): 18853066

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 169, 205, 271, 338, 410, 533, 542, 845, 1066, 1355, 1690, 2665, 2710, 3523, 5330, 6929, 7046, 11111, 13858, 17615, 22222, 34645, 35230, 45799, 55555, 69290, 91598, 111110, 144443, 228995, 288886, 457990, 722215, 1444430, 1877759, 3755518, 9388795, 18777590]

約数ペア:

[(1, 18777590), (2, 9388795), (5, 3755518), (10, 1877759), (13, 1444430), (26, 722215), (41, 457990), (65, 288886), (82, 228995), (130, 144443), (169, 111110), (205, 91598), (271, 69290), (338, 55555), (410, 45799), (533, 35230), (542, 34645), (845, 22222), (1066, 17615), (1355, 13858), (1690, 11111), (2665, 7046), (2710, 6929), (3523, 5330)]