18988740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 61641216

約数和(自身を除く): 42652476

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 41, 45, 60, 62, 82, 83, 90, 93, 123, 124, 155, 164, 166, 180, 186, 205, 246, 249, 279, 310, 332, 369, 372, 410, 415, 465, 492, 498, 558, 615, 620, 738, 747, 820, 830, 930, 996, 1116, 1230, 1245, 1271, 1395, 1476, 1494, 1660, 1845, 1860, 2460, 2490, 2542, 2573, 2790, 2988, 3403, 3690, 3735, 3813, 4980, 5084, 5146, 5580, 6355, 6806, 7380, 7470, 7626, 7719, 10209, 10292, 11439, 12710, 12865, 13612, 14940, 15252, 15438, 17015, 19065, 20418, 22878, 23157, 25420, 25730, 30627, 30876, 34030, 38130, 38595, 40836, 45756, 46314, 51045, 51460, 57195, 61254, 68060, 76260, 77190, 92628, 102090, 105493, 114390, 115785, 122508, 153135, 154380, 204180, 210986, 228780, 231570, 306270, 316479, 421972, 463140, 527465, 612540, 632958, 949437, 1054930, 1265916, 1582395, 1898874, 2109860, 3164790, 3797748, 4747185, 6329580, 9494370, 18988740]

約数ペア:

[(1, 18988740), (2, 9494370), (3, 6329580), (4, 4747185), (5, 3797748), (6, 3164790), (9, 2109860), (10, 1898874), (12, 1582395), (15, 1265916), (18, 1054930), (20, 949437), (30, 632958), (31, 612540), (36, 527465), (41, 463140), (45, 421972), (60, 316479), (62, 306270), (82, 231570), (83, 228780), (90, 210986), (93, 204180), (123, 154380), (124, 153135), (155, 122508), (164, 115785), (166, 114390), (180, 105493), (186, 102090), (205, 92628), (246, 77190), (249, 76260), (279, 68060), (310, 61254), (332, 57195), (369, 51460), (372, 51045), (410, 46314), (415, 45756), (465, 40836), (492, 38595), (498, 38130), (558, 34030), (615, 30876), (620, 30627), (738, 25730), (747, 25420), (820, 23157), (830, 22878), (930, 20418), (996, 19065), (1116, 17015), (1230, 15438), (1245, 15252), (1271, 14940), (1395, 13612), (1476, 12865), (1494, 12710), (1660, 11439), (1845, 10292), (1860, 10209), (2460, 7719), (2490, 7626), (2542, 7470), (2573, 7380), (2790, 6806), (2988, 6355), (3403, 5580), (3690, 5146), (3735, 5084), (3813, 4980)]