21313864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 48545280

約数和(自身を除く): 27231416

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 31, 44, 52, 62, 88, 104, 124, 143, 248, 286, 341, 403, 572, 601, 682, 806, 1144, 1202, 1364, 1612, 2404, 2728, 3224, 4433, 4808, 6611, 7813, 8866, 13222, 15626, 17732, 18631, 26444, 31252, 35464, 37262, 52888, 62504, 74524, 85943, 149048, 171886, 204941, 242203, 343772, 409882, 484406, 687544, 819764, 968812, 1639528, 1937624, 2664233, 5328466, 10656932, 21313864]

約数ペア:

[(1, 21313864), (2, 10656932), (4, 5328466), (8, 2664233), (11, 1937624), (13, 1639528), (22, 968812), (26, 819764), (31, 687544), (44, 484406), (52, 409882), (62, 343772), (88, 242203), (104, 204941), (124, 171886), (143, 149048), (248, 85943), (286, 74524), (341, 62504), (403, 52888), (572, 37262), (601, 35464), (682, 31252), (806, 26444), (1144, 18631), (1202, 17732), (1364, 15626), (1612, 13222), (2404, 8866), (2728, 7813), (3224, 6611), (4433, 4808)]