21019104

素因数分解:

$2^5\times 3^2\times {\mathrm{59}}^1\times {\mathrm{1237}}^1$

素因数の和:1312

約数の個数: 72

約数和(自身を含む): 60835320

約数和(自身を除く): 39816216

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 59, 72, 96, 118, 144, 177, 236, 288, 354, 472, 531, 708, 944, 1062, 1237, 1416, 1888, 2124, 2474, 2832, 3711, 4248, 4948, 5664, 7422, 8496, 9896, 11133, 14844, 16992, 19792, 22266, 29688, 39584, 44532, 59376, 72983, 89064, 118752, 145966, 178128, 218949, 291932, 356256, 437898, 583864, 656847, 875796, 1167728, 1313694, 1751592, 2335456, 2627388, 3503184, 5254776, 7006368, 10509552, 21019104]

約数ペア:

[(1, 21019104), (2, 10509552), (3, 7006368), (4, 5254776), (6, 3503184), (8, 2627388), (9, 2335456), (12, 1751592), (16, 1313694), (18, 1167728), (24, 875796), (32, 656847), (36, 583864), (48, 437898), (59, 356256), (72, 291932), (96, 218949), (118, 178128), (144, 145966), (177, 118752), (236, 89064), (288, 72983), (354, 59376), (472, 44532), (531, 39584), (708, 29688), (944, 22266), (1062, 19792), (1237, 16992), (1416, 14844), (1888, 11133), (2124, 9896), (2474, 8496), (2832, 7422), (3711, 5664), (4248, 4948)]