20145258125

素因数分解:

$5^4\times {\mathrm{43}}^1\times {\mathrm{419}}^1\times {\mathrm{1789}}^1$

素因数の和:2271

約数の個数: 40

約数和(自身を含む): 25834855200

約数和(自身を除く): 5689597075

約数列:

[1, 5, 25, 43, 125, 215, 419, 625, 1075, 1789, 2095, 5375, 8945, 10475, 18017, 26875, 44725, 52375, 76927, 90085, 223625, 261875, 384635, 450425, 749591, 1118125, 1923175, 2252125, 3747955, 9615875, 11260625, 18739775, 32232413, 48079375, 93698875, 161162065, 468494375, 805810325, 4029051625, 20145258125]

約数ペア:

[(1, 20145258125), (5, 4029051625), (25, 805810325), (43, 468494375), (125, 161162065), (215, 93698875), (419, 48079375), (625, 32232413), (1075, 18739775), (1789, 11260625), (2095, 9615875), (5375, 3747955), (8945, 2252125), (10475, 1923175), (18017, 1118125), (26875, 749591), (44725, 450425), (52375, 384635), (76927, 261875), (90085, 223625)]