21438872

素因数分解:

$2^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:641

約数の個数: 64

約数和(自身を含む): 50568000

約数和(自身を除く): 29129128

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 343, 364, 392, 601, 637, 686, 728, 1202, 1274, 1372, 2404, 2548, 2744, 4207, 4459, 4808, 5096, 7813, 8414, 8918, 15626, 16828, 17836, 29449, 31252, 33656, 35672, 54691, 58898, 62504, 109382, 117796, 206143, 218764, 235592, 382837, 412286, 437528, 765674, 824572, 1531348, 1649144, 2679859, 3062696, 5359718, 10719436, 21438872]

約数ペア:

[(1, 21438872), (2, 10719436), (4, 5359718), (7, 3062696), (8, 2679859), (13, 1649144), (14, 1531348), (26, 824572), (28, 765674), (49, 437528), (52, 412286), (56, 382837), (91, 235592), (98, 218764), (104, 206143), (182, 117796), (196, 109382), (343, 62504), (364, 58898), (392, 54691), (601, 35672), (637, 33656), (686, 31252), (728, 29449), (1202, 17836), (1274, 16828), (1372, 15626), (2404, 8918), (2548, 8414), (2744, 7813), (4207, 5096), (4459, 4808)]