20071820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 43642368

約数和(自身を除く): 23570548

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 131, 163, 188, 235, 262, 326, 470, 524, 652, 655, 815, 940, 1310, 1630, 2620, 3260, 6157, 7661, 12314, 15322, 21353, 24628, 30644, 30785, 38305, 42706, 61570, 76610, 85412, 106765, 123140, 153220, 213530, 427060, 1003591, 2007182, 4014364, 5017955, 10035910, 20071820]

約数ペア:

[(1, 20071820), (2, 10035910), (4, 5017955), (5, 4014364), (10, 2007182), (20, 1003591), (47, 427060), (94, 213530), (131, 153220), (163, 123140), (188, 106765), (235, 85412), (262, 76610), (326, 61570), (470, 42706), (524, 38305), (652, 30785), (655, 30644), (815, 24628), (940, 21353), (1310, 15322), (1630, 12314), (2620, 7661), (3260, 6157)]