21878164

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{283}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 48093696

約数和(自身を除く): 26215532

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 251, 283, 308, 502, 566, 1004, 1132, 1757, 1981, 2761, 3113, 3514, 3962, 5522, 6226, 7028, 7924, 11044, 12452, 19327, 21791, 38654, 43582, 71033, 77308, 87164, 142066, 284132, 497231, 781363, 994462, 1562726, 1988924, 3125452, 5469541, 10939082, 21878164]

約数ペア:

[(1, 21878164), (2, 10939082), (4, 5469541), (7, 3125452), (11, 1988924), (14, 1562726), (22, 994462), (28, 781363), (44, 497231), (77, 284132), (154, 142066), (251, 87164), (283, 77308), (308, 71033), (502, 43582), (566, 38654), (1004, 21791), (1132, 19327), (1757, 12452), (1981, 11044), (2761, 7924), (3113, 7028), (3514, 6226), (3962, 5522)]