6399640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 16047360

約数和(自身を除く): 9647720

約数列:

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

約数ペア:

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