21485312

素因数分解:

$2^8\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 24872608

約数列:

[1, 2, 4, 8, 16, 23, 32, 41, 46, 64, 82, 89, 92, 128, 164, 178, 184, 256, 328, 356, 368, 656, 712, 736, 943, 1312, 1424, 1472, 1886, 2047, 2624, 2848, 2944, 3649, 3772, 4094, 5248, 5696, 5888, 7298, 7544, 8188, 10496, 11392, 14596, 15088, 16376, 22784, 29192, 30176, 32752, 58384, 60352, 65504, 83927, 116768, 120704, 131008, 167854, 233536, 241408, 262016, 335708, 467072, 524032, 671416, 934144, 1342832, 2685664, 5371328, 10742656, 21485312]

約数ペア:

[(1, 21485312), (2, 10742656), (4, 5371328), (8, 2685664), (16, 1342832), (23, 934144), (32, 671416), (41, 524032), (46, 467072), (64, 335708), (82, 262016), (89, 241408), (92, 233536), (128, 167854), (164, 131008), (178, 120704), (184, 116768), (256, 83927), (328, 65504), (356, 60352), (368, 58384), (656, 32752), (712, 30176), (736, 29192), (943, 22784), (1312, 16376), (1424, 15088), (1472, 14596), (1886, 11392), (2047, 10496), (2624, 8188), (2848, 7544), (2944, 7298), (3649, 5888), (3772, 5696), (4094, 5248)]