21015808

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:483

約数の個数: 72

約数和(自身を含む): 48565440

約数和(自身を除く): 27549632

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 64, 68, 88, 128, 136, 176, 187, 256, 272, 352, 374, 439, 544, 704, 748, 878, 1088, 1408, 1496, 1756, 2176, 2816, 2992, 3512, 4352, 4829, 5984, 7024, 7463, 9658, 11968, 14048, 14926, 19316, 23936, 28096, 29852, 38632, 47872, 56192, 59704, 77264, 82093, 112384, 119408, 154528, 164186, 238816, 309056, 328372, 477632, 618112, 656744, 955264, 1236224, 1313488, 1910528, 2626976, 5253952, 10507904, 21015808]

約数ペア:

[(1, 21015808), (2, 10507904), (4, 5253952), (8, 2626976), (11, 1910528), (16, 1313488), (17, 1236224), (22, 955264), (32, 656744), (34, 618112), (44, 477632), (64, 328372), (68, 309056), (88, 238816), (128, 164186), (136, 154528), (176, 119408), (187, 112384), (256, 82093), (272, 77264), (352, 59704), (374, 56192), (439, 47872), (544, 38632), (704, 29852), (748, 28096), (878, 23936), (1088, 19316), (1408, 14926), (1496, 14048), (1756, 11968), (2176, 9658), (2816, 7463), (2992, 7024), (3512, 5984), (4352, 4829)]