21103698400

素因数分解:

$2^5\times 5^2\times {\mathrm{997}}^1\times {\mathrm{26459}}^1$

素因数の和:27476

約数の個数: 72

約数和(自身を含む): 51573027240

約数和(自身を除く): 30469328840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 997, 1994, 3988, 4985, 7976, 9970, 15952, 19940, 24925, 26459, 31904, 39880, 49850, 52918, 79760, 99700, 105836, 132295, 159520, 199400, 211672, 264590, 398800, 423344, 529180, 661475, 797600, 846688, 1058360, 1322950, 2116720, 2645900, 4233440, 5291800, 10583600, 21167200, 26379623, 52759246, 105518492, 131898115, 211036984, 263796230, 422073968, 527592460, 659490575, 844147936, 1055184920, 1318981150, 2110369840, 2637962300, 4220739680, 5275924600, 10551849200, 21103698400]

約数ペア:

[(1, 21103698400), (2, 10551849200), (4, 5275924600), (5, 4220739680), (8, 2637962300), (10, 2110369840), (16, 1318981150), (20, 1055184920), (25, 844147936), (32, 659490575), (40, 527592460), (50, 422073968), (80, 263796230), (100, 211036984), (160, 131898115), (200, 105518492), (400, 52759246), (800, 26379623), (997, 21167200), (1994, 10583600), (3988, 5291800), (4985, 4233440), (7976, 2645900), (9970, 2116720), (15952, 1322950), (19940, 1058360), (24925, 846688), (26459, 797600), (31904, 661475), (39880, 529180), (49850, 423344), (52918, 398800), (79760, 264590), (99700, 211672), (105836, 199400), (132295, 159520)]