661793456

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:538

約数の個数: 80

約数和(自身を含む): 1383244800

約数和(自身を除く): 721451344

約数列:

[1, 2, 4, 8, 16, 29, 31, 58, 62, 116, 124, 139, 232, 248, 278, 331, 464, 496, 556, 662, 899, 1112, 1324, 1798, 2224, 2648, 3596, 4031, 4309, 5296, 7192, 8062, 8618, 9599, 10261, 14384, 16124, 17236, 19198, 20522, 32248, 34472, 38396, 41044, 46009, 64496, 68944, 76792, 82088, 92018, 124961, 153584, 164176, 184036, 249922, 297569, 368072, 499844, 595138, 736144, 999688, 1190276, 1334261, 1426279, 1999376, 2380552, 2668522, 2852558, 4761104, 5337044, 5705116, 10674088, 11410232, 21348176, 22820464, 41362091, 82724182, 165448364, 330896728, 661793456]

約数ペア:

[(1, 661793456), (2, 330896728), (4, 165448364), (8, 82724182), (16, 41362091), (29, 22820464), (31, 21348176), (58, 11410232), (62, 10674088), (116, 5705116), (124, 5337044), (139, 4761104), (232, 2852558), (248, 2668522), (278, 2380552), (331, 1999376), (464, 1426279), (496, 1334261), (556, 1190276), (662, 999688), (899, 736144), (1112, 595138), (1324, 499844), (1798, 368072), (2224, 297569), (2648, 249922), (3596, 184036), (4031, 164176), (4309, 153584), (5296, 124961), (7192, 92018), (8062, 82088), (8618, 76792), (9599, 68944), (10261, 64496), (14384, 46009), (16124, 41044), (17236, 38396), (19198, 34472), (20522, 32248)]