12799280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 33164544

約数和(自身を除く): 20365264

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 397, 403, 496, 520, 620, 794, 806, 1040, 1240, 1588, 1612, 1985, 2015, 2480, 3176, 3224, 3970, 4030, 5161, 6352, 6448, 7940, 8060, 10322, 12307, 15880, 16120, 20644, 24614, 25805, 31760, 32240, 41288, 49228, 51610, 61535, 82576, 98456, 103220, 123070, 159991, 196912, 206440, 246140, 319982, 412880, 492280, 639964, 799955, 984560, 1279928, 1599910, 2559856, 3199820, 6399640, 12799280]

約数ペア:

[(1, 12799280), (2, 6399640), (4, 3199820), (5, 2559856), (8, 1599910), (10, 1279928), (13, 984560), (16, 799955), (20, 639964), (26, 492280), (31, 412880), (40, 319982), (52, 246140), (62, 206440), (65, 196912), (80, 159991), (104, 123070), (124, 103220), (130, 98456), (155, 82576), (208, 61535), (248, 51610), (260, 49228), (310, 41288), (397, 32240), (403, 31760), (496, 25805), (520, 24614), (620, 20644), (794, 16120), (806, 15880), (1040, 12307), (1240, 10322), (1588, 8060), (1612, 7940), (1985, 6448), (2015, 6352), (2480, 5161), (3176, 4030), (3224, 3970)]