20972640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3361}}^1$

素因数の和:3392

約数の個数: 96

約数和(自身を含む): 71166816

約数和(自身を除く): 50194176

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 3361, 6240, 6722, 10083, 13444, 16805, 20166, 26888, 33610, 40332, 43693, 50415, 53776, 67220, 80664, 87386, 100830, 107552, 131079, 134440, 161328, 174772, 201660, 218465, 262158, 268880, 322656, 349544, 403320, 436930, 524316, 537760, 655395, 699088, 806640, 873860, 1048632, 1310790, 1398176, 1613280, 1747720, 2097264, 2621580, 3495440, 4194528, 5243160, 6990880, 10486320, 20972640]

約数ペア:

[(1, 20972640), (2, 10486320), (3, 6990880), (4, 5243160), (5, 4194528), (6, 3495440), (8, 2621580), (10, 2097264), (12, 1747720), (13, 1613280), (15, 1398176), (16, 1310790), (20, 1048632), (24, 873860), (26, 806640), (30, 699088), (32, 655395), (39, 537760), (40, 524316), (48, 436930), (52, 403320), (60, 349544), (65, 322656), (78, 268880), (80, 262158), (96, 218465), (104, 201660), (120, 174772), (130, 161328), (156, 134440), (160, 131079), (195, 107552), (208, 100830), (240, 87386), (260, 80664), (312, 67220), (390, 53776), (416, 50415), (480, 43693), (520, 40332), (624, 33610), (780, 26888), (1040, 20166), (1248, 16805), (1560, 13444), (2080, 10083), (3120, 6722), (3361, 6240)]