20139821212

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{147787}}^1$

素因数の和:147986

約数の個数: 48

約数和(自身を含む): 41844103168

約数和(自身を除く): 21704281956

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 157, 217, 314, 434, 628, 868, 1099, 2198, 4396, 4867, 9734, 19468, 34069, 68138, 136276, 147787, 295574, 591148, 1034509, 2069018, 4138036, 4581397, 9162794, 18325588, 23202559, 32069779, 46405118, 64139558, 92810236, 128279116, 162417913, 324835826, 649671652, 719279329, 1438558658, 2877117316, 5034955303, 10069910606, 20139821212]

約数ペア:

[(1, 20139821212), (2, 10069910606), (4, 5034955303), (7, 2877117316), (14, 1438558658), (28, 719279329), (31, 649671652), (62, 324835826), (124, 162417913), (157, 128279116), (217, 92810236), (314, 64139558), (434, 46405118), (628, 32069779), (868, 23202559), (1099, 18325588), (2198, 9162794), (4396, 4581397), (4867, 4138036), (9734, 2069018), (19468, 1034509), (34069, 591148), (68138, 295574), (136276, 147787)]