815375020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:619

約数の個数: 96

約数和(自身を含む): 1850688000

約数和(自身を除く): 1035312980

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 101, 116, 124, 145, 155, 202, 290, 310, 404, 449, 505, 580, 620, 898, 899, 1010, 1796, 1798, 2020, 2245, 2929, 3131, 3596, 4490, 4495, 5858, 6262, 8980, 8990, 11716, 12524, 13021, 13919, 14645, 15655, 17980, 26042, 27838, 29290, 31310, 45349, 52084, 55676, 58580, 62620, 65105, 69595, 90698, 90799, 130210, 139190, 181396, 181598, 226745, 260420, 278380, 363196, 403651, 453490, 453995, 807302, 906980, 907990, 1315121, 1405819, 1614604, 1815980, 2018255, 2630242, 2811638, 4036510, 5260484, 5623276, 6575605, 7029095, 8073020, 13151210, 14058190, 26302420, 28116380, 40768751, 81537502, 163075004, 203843755, 407687510, 815375020]

約数ペア:

[(1, 815375020), (2, 407687510), (4, 203843755), (5, 163075004), (10, 81537502), (20, 40768751), (29, 28116380), (31, 26302420), (58, 14058190), (62, 13151210), (101, 8073020), (116, 7029095), (124, 6575605), (145, 5623276), (155, 5260484), (202, 4036510), (290, 2811638), (310, 2630242), (404, 2018255), (449, 1815980), (505, 1614604), (580, 1405819), (620, 1315121), (898, 907990), (899, 906980), (1010, 807302), (1796, 453995), (1798, 453490), (2020, 403651), (2245, 363196), (2929, 278380), (3131, 260420), (3596, 226745), (4490, 181598), (4495, 181396), (5858, 139190), (6262, 130210), (8980, 90799), (8990, 90698), (11716, 69595), (12524, 65105), (13021, 62620), (13919, 58580), (14645, 55676), (15655, 52084), (17980, 45349), (26042, 31310), (27838, 29290)]