21601528

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3919}}^1$

素因数の和:3991

約数の個数: 32

約数和(自身を含む): 44452800

約数和(自身を除く): 22851272

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3919, 5512, 7838, 15676, 31352, 50947, 101894, 203788, 207707, 407576, 415414, 830828, 1661656, 2700191, 5400382, 10800764, 21601528]

約数ペア:

[(1, 21601528), (2, 10800764), (4, 5400382), (8, 2700191), (13, 1661656), (26, 830828), (52, 415414), (53, 407576), (104, 207707), (106, 203788), (212, 101894), (424, 50947), (689, 31352), (1378, 15676), (2756, 7838), (3919, 5512)]