278645220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{787}}^1$

素因数の和:1090

約数の個数: 144

約数和(自身を含む): 970639488

約数和(自身を除く): 691994268

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 281, 315, 420, 562, 630, 787, 843, 1124, 1260, 1405, 1574, 1686, 1967, 2361, 2529, 2810, 3148, 3372, 3934, 3935, 4215, 4722, 5058, 5509, 5620, 5901, 7083, 7868, 7870, 8430, 9444, 9835, 10116, 11018, 11802, 11805, 12645, 14166, 15740, 16527, 16860, 17703, 19670, 22036, 23604, 23610, 25290, 27545, 28332, 29505, 33054, 35406, 35415, 39340, 47220, 49581, 50580, 55090, 59010, 66108, 70812, 70830, 82635, 88515, 99162, 110180, 118020, 141660, 165270, 177030, 198324, 221147, 247905, 330540, 354060, 442294, 495810, 663441, 884588, 991620, 1105735, 1326882, 1548029, 1990323, 2211470, 2653764, 3096058, 3317205, 3980646, 4422940, 4644087, 6192116, 6634410, 7740145, 7961292, 9288174, 9951615, 13268820, 13932261, 15480290, 18576348, 19903230, 23220435, 27864522, 30960580, 39806460, 46440870, 55729044, 69661305, 92881740, 139322610, 278645220]

約数ペア:

[(1, 278645220), (2, 139322610), (3, 92881740), (4, 69661305), (5, 55729044), (6, 46440870), (7, 39806460), (9, 30960580), (10, 27864522), (12, 23220435), (14, 19903230), (15, 18576348), (18, 15480290), (20, 13932261), (21, 13268820), (28, 9951615), (30, 9288174), (35, 7961292), (36, 7740145), (42, 6634410), (45, 6192116), (60, 4644087), (63, 4422940), (70, 3980646), (84, 3317205), (90, 3096058), (105, 2653764), (126, 2211470), (140, 1990323), (180, 1548029), (210, 1326882), (252, 1105735), (281, 991620), (315, 884588), (420, 663441), (562, 495810), (630, 442294), (787, 354060), (843, 330540), (1124, 247905), (1260, 221147), (1405, 198324), (1574, 177030), (1686, 165270), (1967, 141660), (2361, 118020), (2529, 110180), (2810, 99162), (3148, 88515), (3372, 82635), (3934, 70830), (3935, 70812), (4215, 66108), (4722, 59010), (5058, 55090), (5509, 50580), (5620, 49581), (5901, 47220), (7083, 39340), (7868, 35415), (7870, 35406), (8430, 33054), (9444, 29505), (9835, 28332), (10116, 27545), (11018, 25290), (11802, 23610), (11805, 23604), (12645, 22036), (14166, 19670), (15740, 17703), (16527, 16860)]