661412032

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{857}}^1$

素因数の和:1289

約数の個数: 56

約数和(自身を含む): 1359895680

約数和(自身を除く): 698483648

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 389, 496, 778, 857, 992, 1556, 1714, 1984, 3112, 3428, 6224, 6856, 12059, 12448, 13712, 24118, 24896, 26567, 27424, 48236, 53134, 54848, 96472, 106268, 192944, 212536, 333373, 385888, 425072, 666746, 771776, 850144, 1333492, 1700288, 2666984, 5333968, 10334563, 10667936, 20669126, 21335872, 41338252, 82676504, 165353008, 330706016, 661412032]

約数ペア:

[(1, 661412032), (2, 330706016), (4, 165353008), (8, 82676504), (16, 41338252), (31, 21335872), (32, 20669126), (62, 10667936), (64, 10334563), (124, 5333968), (248, 2666984), (389, 1700288), (496, 1333492), (778, 850144), (857, 771776), (992, 666746), (1556, 425072), (1714, 385888), (1984, 333373), (3112, 212536), (3428, 192944), (6224, 106268), (6856, 96472), (12059, 54848), (12448, 53134), (13712, 48236), (24118, 27424), (24896, 26567)]