21544480

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{373}}^1$

素因数の和:426

約数の個数: 72

約数和(自身を含む): 53862732

約数和(自身を除く): 32318252

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 361, 373, 380, 608, 722, 746, 760, 1444, 1492, 1520, 1805, 1865, 2888, 2984, 3040, 3610, 3730, 5776, 5968, 7087, 7220, 7460, 11552, 11936, 14174, 14440, 14920, 28348, 28880, 29840, 35435, 56696, 57760, 59680, 70870, 113392, 134653, 141740, 226784, 269306, 283480, 538612, 566960, 673265, 1077224, 1133920, 1346530, 2154448, 2693060, 4308896, 5386120, 10772240, 21544480]

約数ペア:

[(1, 21544480), (2, 10772240), (4, 5386120), (5, 4308896), (8, 2693060), (10, 2154448), (16, 1346530), (19, 1133920), (20, 1077224), (32, 673265), (38, 566960), (40, 538612), (76, 283480), (80, 269306), (95, 226784), (152, 141740), (160, 134653), (190, 113392), (304, 70870), (361, 59680), (373, 57760), (380, 56696), (608, 35435), (722, 29840), (746, 28880), (760, 28348), (1444, 14920), (1492, 14440), (1520, 14174), (1805, 11936), (1865, 11552), (2888, 7460), (2984, 7220), (3040, 7087), (3610, 5968), (3730, 5776)]