21324680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1783}}^1$

素因数の和:1830

約数の個数: 64

約数和(自身を含む): 53948160

約数和(自身を除く): 32623480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1783, 2392, 2990, 3566, 5980, 7132, 8915, 11960, 14264, 17830, 23179, 35660, 41009, 46358, 71320, 82018, 92716, 115895, 164036, 185432, 205045, 231790, 328072, 410090, 463580, 533117, 820180, 927160, 1066234, 1640360, 2132468, 2665585, 4264936, 5331170, 10662340, 21324680]

約数ペア:

[(1, 21324680), (2, 10662340), (4, 5331170), (5, 4264936), (8, 2665585), (10, 2132468), (13, 1640360), (20, 1066234), (23, 927160), (26, 820180), (40, 533117), (46, 463580), (52, 410090), (65, 328072), (92, 231790), (104, 205045), (115, 185432), (130, 164036), (184, 115895), (230, 92716), (260, 82018), (299, 71320), (460, 46358), (520, 41009), (598, 35660), (920, 23179), (1196, 17830), (1495, 14264), (1783, 11960), (2392, 8915), (2990, 7132), (3566, 5980)]