689731648

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{509}}^1\times {\mathrm{683}}^1$

素因数の和:1235

約数の個数: 56

約数和(自身を含む): 1417685760

約数和(自身を除く): 727954112

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 496, 509, 683, 992, 1018, 1366, 1984, 2036, 2732, 4072, 5464, 8144, 10928, 15779, 16288, 21173, 21856, 31558, 32576, 42346, 43712, 63116, 84692, 126232, 169384, 252464, 338768, 347647, 504928, 677536, 695294, 1009856, 1355072, 1390588, 2781176, 5562352, 10777057, 11124704, 21554114, 22249408, 43108228, 86216456, 172432912, 344865824, 689731648]

約数ペア:

[(1, 689731648), (2, 344865824), (4, 172432912), (8, 86216456), (16, 43108228), (31, 22249408), (32, 21554114), (62, 11124704), (64, 10777057), (124, 5562352), (248, 2781176), (496, 1390588), (509, 1355072), (683, 1009856), (992, 695294), (1018, 677536), (1366, 504928), (1984, 347647), (2036, 338768), (2732, 252464), (4072, 169384), (5464, 126232), (8144, 84692), (10928, 63116), (15779, 43712), (16288, 42346), (21173, 32576), (21856, 31558)]