21895264

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:523

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23827616

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 368, 419, 568, 736, 838, 1136, 1633, 1676, 2272, 3266, 3352, 6532, 6704, 9637, 13064, 13408, 19274, 26128, 29749, 38548, 52256, 59498, 77096, 118996, 154192, 237992, 308384, 475984, 684227, 951968, 1368454, 2736908, 5473816, 10947632, 21895264]

約数ペア:

[(1, 21895264), (2, 10947632), (4, 5473816), (8, 2736908), (16, 1368454), (23, 951968), (32, 684227), (46, 475984), (71, 308384), (92, 237992), (142, 154192), (184, 118996), (284, 77096), (368, 59498), (419, 52256), (568, 38548), (736, 29749), (838, 26128), (1136, 19274), (1633, 13408), (1676, 13064), (2272, 9637), (3266, 6704), (3352, 6532)]