21571293520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5502881}}^1$

素因数の和:5502908

約数の個数: 60

約数和(自身を含む): 58341554964

約数和(自身を除く): 36770261444

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5502881, 11005762, 22011524, 27514405, 38520167, 44023048, 55028810, 77040334, 88046096, 110057620, 154080668, 192600835, 220115240, 269641169, 308161336, 385201670, 440230480, 539282338, 616322672, 770403340, 1078564676, 1348205845, 1540806680, 2157129352, 2696411690, 3081613360, 4314258704, 5392823380, 10785646760, 21571293520]

約数ペア:

[(1, 21571293520), (2, 10785646760), (4, 5392823380), (5, 4314258704), (7, 3081613360), (8, 2696411690), (10, 2157129352), (14, 1540806680), (16, 1348205845), (20, 1078564676), (28, 770403340), (35, 616322672), (40, 539282338), (49, 440230480), (56, 385201670), (70, 308161336), (80, 269641169), (98, 220115240), (112, 192600835), (140, 154080668), (196, 110057620), (245, 88046096), (280, 77040334), (392, 55028810), (490, 44023048), (560, 38520167), (784, 27514405), (980, 22011524), (1960, 11005762), (3920, 5502881)]