20178867740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{378023}}^1$

素因数の和:378206

約数の個数: 48

約数和(自身を含む): 45154210752

約数和(自身を除く): 24975343012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 157, 170, 314, 340, 628, 785, 1570, 2669, 3140, 5338, 10676, 13345, 26690, 53380, 378023, 756046, 1512092, 1890115, 3780230, 6426391, 7560460, 12852782, 25705564, 32131955, 59349611, 64263910, 118699222, 128527820, 237398444, 296748055, 593496110, 1008943387, 1186992220, 2017886774, 4035773548, 5044716935, 10089433870, 20178867740]

約数ペア:

[(1, 20178867740), (2, 10089433870), (4, 5044716935), (5, 4035773548), (10, 2017886774), (17, 1186992220), (20, 1008943387), (34, 593496110), (68, 296748055), (85, 237398444), (157, 128527820), (170, 118699222), (314, 64263910), (340, 59349611), (628, 32131955), (785, 25705564), (1570, 12852782), (2669, 7560460), (3140, 6426391), (5338, 3780230), (10676, 1890115), (13345, 1512092), (26690, 756046), (53380, 378023)]