20050804840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{305839}}^1$

素因数の和:306010

約数の個数: 64

約数和(自身を含む): 49546080000

約数和(自身を除く): 29495275160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 440, 596, 745, 1192, 1490, 1639, 2980, 3278, 5960, 6556, 8195, 13112, 16390, 32780, 65560, 305839, 611678, 1223356, 1529195, 2446712, 3058390, 3364229, 6116780, 6728458, 12233560, 13456916, 16821145, 26913832, 33642290, 45570011, 67284580, 91140022, 134569160, 182280044, 227850055, 364560088, 455700110, 501270121, 911400220, 1002540242, 1822800440, 2005080484, 2506350605, 4010160968, 5012701210, 10025402420, 20050804840]

約数ペア:

[(1, 20050804840), (2, 10025402420), (4, 5012701210), (5, 4010160968), (8, 2506350605), (10, 2005080484), (11, 1822800440), (20, 1002540242), (22, 911400220), (40, 501270121), (44, 455700110), (55, 364560088), (88, 227850055), (110, 182280044), (149, 134569160), (220, 91140022), (298, 67284580), (440, 45570011), (596, 33642290), (745, 26913832), (1192, 16821145), (1490, 13456916), (1639, 12233560), (2980, 6728458), (3278, 6116780), (5960, 3364229), (6556, 3058390), (8195, 2446712), (13112, 1529195), (16390, 1223356), (32780, 611678), (65560, 305839)]