218455020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{617}}^1$

素因数の和:920

約数の個数: 144

約数和(自身を含む): 761237568

約数和(自身を除く): 542782548

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, 617, 630, 843, 1124, 1234, 1260, 1405, 1686, 1851, 1967, 2468, 2529, 2810, 3085, 3372, 3702, 3934, 4215, 4319, 5058, 5553, 5620, 5901, 6170, 7404, 7868, 8430, 8638, 9255, 9835, 10116, 11106, 11802, 12340, 12645, 12957, 16860, 17276, 17703, 18510, 19670, 21595, 22212, 23604, 25290, 25914, 27765, 29505, 35406, 37020, 38871, 39340, 43190, 50580, 51828, 55530, 59010, 64785, 70812, 77742, 86380, 88515, 111060, 118020, 129570, 155484, 173377, 177030, 194355, 259140, 346754, 354060, 388710, 520131, 693508, 777420, 866885, 1040262, 1213639, 1560393, 1733770, 2080524, 2427278, 2600655, 3120786, 3467540, 3640917, 4854556, 5201310, 6068195, 6241572, 7281834, 7801965, 10402620, 10922751, 12136390, 14563668, 15603930, 18204585, 21845502, 24272780, 31207860, 36409170, 43691004, 54613755, 72818340, 109227510, 218455020]

約数ペア:

[(1, 218455020), (2, 109227510), (3, 72818340), (4, 54613755), (5, 43691004), (6, 36409170), (7, 31207860), (9, 24272780), (10, 21845502), (12, 18204585), (14, 15603930), (15, 14563668), (18, 12136390), (20, 10922751), (21, 10402620), (28, 7801965), (30, 7281834), (35, 6241572), (36, 6068195), (42, 5201310), (45, 4854556), (60, 3640917), (63, 3467540), (70, 3120786), (84, 2600655), (90, 2427278), (105, 2080524), (126, 1733770), (140, 1560393), (180, 1213639), (210, 1040262), (252, 866885), (281, 777420), (315, 693508), (420, 520131), (562, 388710), (617, 354060), (630, 346754), (843, 259140), (1124, 194355), (1234, 177030), (1260, 173377), (1405, 155484), (1686, 129570), (1851, 118020), (1967, 111060), (2468, 88515), (2529, 86380), (2810, 77742), (3085, 70812), (3372, 64785), (3702, 59010), (3934, 55530), (4215, 51828), (4319, 50580), (5058, 43190), (5553, 39340), (5620, 38871), (5901, 37020), (6170, 35406), (7404, 29505), (7868, 27765), (8430, 25914), (8638, 25290), (9255, 23604), (9835, 22212), (10116, 21595), (11106, 19670), (11802, 18510), (12340, 17703), (12645, 17276), (12957, 16860)]