20107389640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3911}}^1\times {\mathrm{9887}}^1$

素因数の和:13822

約数の個数: 64

約数和(自身を含む): 48739138560

約数和(自身を除く): 28631748920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 3911, 7822, 9887, 15644, 19555, 19774, 31288, 39110, 39548, 49435, 50843, 78220, 79096, 98870, 101686, 128531, 156440, 197740, 203372, 254215, 257062, 395480, 406744, 508430, 514124, 642655, 1016860, 1028248, 1285310, 2033720, 2570620, 5141240, 38668057, 77336114, 154672228, 193340285, 309344456, 386680570, 502684741, 773361140, 1005369482, 1546722280, 2010738964, 2513423705, 4021477928, 5026847410, 10053694820, 20107389640]

約数ペア:

[(1, 20107389640), (2, 10053694820), (4, 5026847410), (5, 4021477928), (8, 2513423705), (10, 2010738964), (13, 1546722280), (20, 1005369482), (26, 773361140), (40, 502684741), (52, 386680570), (65, 309344456), (104, 193340285), (130, 154672228), (260, 77336114), (520, 38668057), (3911, 5141240), (7822, 2570620), (9887, 2033720), (15644, 1285310), (19555, 1028248), (19774, 1016860), (31288, 642655), (39110, 514124), (39548, 508430), (49435, 406744), (50843, 395480), (78220, 257062), (79096, 254215), (98870, 203372), (101686, 197740), (128531, 156440)]