21542272

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 45532800

約数和(自身を除く): 23990528

約数列:

[1, 2, 4, 8, 16, 31, 32, 61, 62, 64, 89, 122, 124, 128, 178, 244, 248, 356, 488, 496, 712, 976, 992, 1424, 1891, 1952, 1984, 2759, 2848, 3782, 3904, 3968, 5429, 5518, 5696, 7564, 7808, 10858, 11036, 11392, 15128, 21716, 22072, 30256, 43432, 44144, 60512, 86864, 88288, 121024, 168299, 173728, 176576, 242048, 336598, 347456, 353152, 673196, 694912, 1346392, 2692784, 5385568, 10771136, 21542272]

約数ペア:

[(1, 21542272), (2, 10771136), (4, 5385568), (8, 2692784), (16, 1346392), (31, 694912), (32, 673196), (61, 353152), (62, 347456), (64, 336598), (89, 242048), (122, 176576), (124, 173728), (128, 168299), (178, 121024), (244, 88288), (248, 86864), (356, 60512), (488, 44144), (496, 43432), (712, 30256), (976, 22072), (992, 21716), (1424, 15128), (1891, 11392), (1952, 11036), (1984, 10858), (2759, 7808), (2848, 7564), (3782, 5696), (3904, 5518), (3968, 5429)]