821856128

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{207121}}^1$

素因数の和:207166

約数の個数: 32

約数和(自身を含む): 1690115520

約数和(自身を除く): 868259392

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 207121, 414242, 828484, 1656968, 3313936, 6420751, 6627872, 12841502, 13255744, 25683004, 26511488, 51366008, 102732016, 205464032, 410928064, 821856128]

約数ペア:

[(1, 821856128), (2, 410928064), (4, 205464032), (8, 102732016), (16, 51366008), (31, 26511488), (32, 25683004), (62, 13255744), (64, 12841502), (124, 6627872), (128, 6420751), (248, 3313936), (496, 1656968), (992, 828484), (1984, 414242), (3968, 207121)]