20156254820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1\times {\mathrm{26041}}^1$

素因数の和:26305

約数の個数: 72

約数和(自身を含む): 46036526760

約数和(自身を除く): 25880271940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 229, 260, 338, 458, 676, 845, 916, 1145, 1690, 2290, 2977, 3380, 4580, 5954, 11908, 14885, 26041, 29770, 38701, 52082, 59540, 77402, 104164, 130205, 154804, 193505, 260410, 338533, 387010, 520820, 677066, 774020, 1354132, 1692665, 3385330, 4400929, 5963389, 6770660, 8801858, 11926778, 17603716, 22004645, 23853556, 29816945, 44009290, 59633890, 77524057, 88018580, 119267780, 155048114, 310096228, 387620285, 775240570, 1007812741, 1550481140, 2015625482, 4031250964, 5039063705, 10078127410, 20156254820]

約数ペア:

[(1, 20156254820), (2, 10078127410), (4, 5039063705), (5, 4031250964), (10, 2015625482), (13, 1550481140), (20, 1007812741), (26, 775240570), (52, 387620285), (65, 310096228), (130, 155048114), (169, 119267780), (229, 88018580), (260, 77524057), (338, 59633890), (458, 44009290), (676, 29816945), (845, 23853556), (916, 22004645), (1145, 17603716), (1690, 11926778), (2290, 8801858), (2977, 6770660), (3380, 5963389), (4580, 4400929), (5954, 3385330), (11908, 1692665), (14885, 1354132), (26041, 774020), (29770, 677066), (38701, 520820), (52082, 387010), (59540, 338533), (77402, 260410), (104164, 193505), (130205, 154804)]