21403560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1031}}^1$

素因数の和:1218

約数の個数: 64

約数和(自身を含む): 64644480

約数和(自身を除く): 43240920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 173, 346, 519, 692, 865, 1031, 1038, 1384, 1730, 2062, 2076, 2595, 3093, 3460, 4124, 4152, 5155, 5190, 6186, 6920, 8248, 10310, 10380, 12372, 15465, 20620, 20760, 24744, 30930, 41240, 61860, 123720, 178363, 356726, 535089, 713452, 891815, 1070178, 1426904, 1783630, 2140356, 2675445, 3567260, 4280712, 5350890, 7134520, 10701780, 21403560]

約数ペア:

[(1, 21403560), (2, 10701780), (3, 7134520), (4, 5350890), (5, 4280712), (6, 3567260), (8, 2675445), (10, 2140356), (12, 1783630), (15, 1426904), (20, 1070178), (24, 891815), (30, 713452), (40, 535089), (60, 356726), (120, 178363), (173, 123720), (346, 61860), (519, 41240), (692, 30930), (865, 24744), (1031, 20760), (1038, 20620), (1384, 15465), (1730, 12372), (2062, 10380), (2076, 10310), (2595, 8248), (3093, 6920), (3460, 6186), (4124, 5190), (4152, 5155)]