21085568

素因数分解:

$2^7\times 7^1\times {\mathrm{101}}^1\times {\mathrm{233}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 48690720

約数和(自身を除く): 27605152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 101, 112, 128, 202, 224, 233, 404, 448, 466, 707, 808, 896, 932, 1414, 1616, 1631, 1864, 2828, 3232, 3262, 3728, 5656, 6464, 6524, 7456, 11312, 12928, 13048, 14912, 22624, 23533, 26096, 29824, 45248, 47066, 52192, 90496, 94132, 104384, 164731, 188264, 208768, 329462, 376528, 658924, 753056, 1317848, 1506112, 2635696, 3012224, 5271392, 10542784, 21085568]

約数ペア:

[(1, 21085568), (2, 10542784), (4, 5271392), (7, 3012224), (8, 2635696), (14, 1506112), (16, 1317848), (28, 753056), (32, 658924), (56, 376528), (64, 329462), (101, 208768), (112, 188264), (128, 164731), (202, 104384), (224, 94132), (233, 90496), (404, 52192), (448, 47066), (466, 45248), (707, 29824), (808, 26096), (896, 23533), (932, 22624), (1414, 14912), (1616, 13048), (1631, 12928), (1864, 11312), (2828, 7456), (3232, 6524), (3262, 6464), (3728, 5656)]