21602800

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{1019}}^1$

素因数の和:1090

約数の個数: 60

約数和(自身を含む): 52931880

約数和(自身を除く): 31329080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 400, 424, 530, 848, 1019, 1060, 1325, 2038, 2120, 2650, 4076, 4240, 5095, 5300, 8152, 10190, 10600, 16304, 20380, 21200, 25475, 40760, 50950, 54007, 81520, 101900, 108014, 203800, 216028, 270035, 407600, 432056, 540070, 864112, 1080140, 1350175, 2160280, 2700350, 4320560, 5400700, 10801400, 21602800]

約数ペア:

[(1, 21602800), (2, 10801400), (4, 5400700), (5, 4320560), (8, 2700350), (10, 2160280), (16, 1350175), (20, 1080140), (25, 864112), (40, 540070), (50, 432056), (53, 407600), (80, 270035), (100, 216028), (106, 203800), (200, 108014), (212, 101900), (265, 81520), (400, 54007), (424, 50950), (530, 40760), (848, 25475), (1019, 21200), (1060, 20380), (1325, 16304), (2038, 10600), (2120, 10190), (2650, 8152), (4076, 5300), (4240, 5095)]