890299980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:688

約数の個数: 144

約数和(自身を含む): 2760750720

約数和(自身を除く): 1870450740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 137, 158, 180, 237, 274, 316, 395, 411, 457, 474, 548, 685, 711, 790, 822, 914, 948, 1185, 1233, 1370, 1371, 1422, 1580, 1644, 1828, 2055, 2285, 2370, 2466, 2740, 2742, 2844, 3555, 4110, 4113, 4570, 4740, 4932, 5484, 6165, 6855, 7110, 8220, 8226, 9140, 10823, 12330, 13710, 14220, 16452, 20565, 21646, 24660, 27420, 32469, 36103, 41130, 43292, 54115, 62609, 64938, 72206, 82260, 97407, 108230, 108309, 125218, 129876, 144412, 162345, 180515, 187827, 194814, 216460, 216618, 250436, 313045, 324690, 324927, 361030, 375654, 389628, 433236, 487035, 541545, 563481, 626090, 649380, 649854, 722060, 751308, 939135, 974070, 1083090, 1126962, 1252180, 1299708, 1624635, 1878270, 1948140, 2166180, 2253924, 2817405, 3249270, 3756540, 4946111, 5634810, 6498540, 9892222, 11269620, 14838333, 19784444, 24730555, 29676666, 44514999, 49461110, 59353332, 74191665, 89029998, 98922220, 148383330, 178059996, 222574995, 296766660, 445149990, 890299980]

約数ペア:

[(1, 890299980), (2, 445149990), (3, 296766660), (4, 222574995), (5, 178059996), (6, 148383330), (9, 98922220), (10, 89029998), (12, 74191665), (15, 59353332), (18, 49461110), (20, 44514999), (30, 29676666), (36, 24730555), (45, 19784444), (60, 14838333), (79, 11269620), (90, 9892222), (137, 6498540), (158, 5634810), (180, 4946111), (237, 3756540), (274, 3249270), (316, 2817405), (395, 2253924), (411, 2166180), (457, 1948140), (474, 1878270), (548, 1624635), (685, 1299708), (711, 1252180), (790, 1126962), (822, 1083090), (914, 974070), (948, 939135), (1185, 751308), (1233, 722060), (1370, 649854), (1371, 649380), (1422, 626090), (1580, 563481), (1644, 541545), (1828, 487035), (2055, 433236), (2285, 389628), (2370, 375654), (2466, 361030), (2740, 324927), (2742, 324690), (2844, 313045), (3555, 250436), (4110, 216618), (4113, 216460), (4570, 194814), (4740, 187827), (4932, 180515), (5484, 162345), (6165, 144412), (6855, 129876), (7110, 125218), (8220, 108309), (8226, 108230), (9140, 97407), (10823, 82260), (12330, 72206), (13710, 64938), (14220, 62609), (16452, 54115), (20565, 43292), (21646, 41130), (24660, 36103), (27420, 32469)]