20805984

素因数分解:

$2^5\times 3^4\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:394

約数の個数: 120

約数和(自身を含む): 64033200

約数和(自身を除く): 43227216

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 27, 32, 36, 46, 48, 54, 69, 72, 81, 92, 96, 108, 138, 144, 162, 184, 207, 216, 276, 288, 324, 349, 368, 414, 432, 552, 621, 648, 698, 736, 828, 864, 1047, 1104, 1242, 1296, 1396, 1656, 1863, 2094, 2208, 2484, 2592, 2792, 3141, 3312, 3726, 4188, 4968, 5584, 6282, 6624, 7452, 8027, 8376, 9423, 9936, 11168, 12564, 14904, 16054, 16752, 18846, 19872, 24081, 25128, 28269, 29808, 32108, 33504, 37692, 48162, 50256, 56538, 59616, 64216, 72243, 75384, 96324, 100512, 113076, 128432, 144486, 150768, 192648, 216729, 226152, 256864, 288972, 301536, 385296, 433458, 452304, 577944, 650187, 770592, 866916, 904608, 1155888, 1300374, 1733832, 2311776, 2600748, 3467664, 5201496, 6935328, 10402992, 20805984]

約数ペア:

[(1, 20805984), (2, 10402992), (3, 6935328), (4, 5201496), (6, 3467664), (8, 2600748), (9, 2311776), (12, 1733832), (16, 1300374), (18, 1155888), (23, 904608), (24, 866916), (27, 770592), (32, 650187), (36, 577944), (46, 452304), (48, 433458), (54, 385296), (69, 301536), (72, 288972), (81, 256864), (92, 226152), (96, 216729), (108, 192648), (138, 150768), (144, 144486), (162, 128432), (184, 113076), (207, 100512), (216, 96324), (276, 75384), (288, 72243), (324, 64216), (349, 59616), (368, 56538), (414, 50256), (432, 48162), (552, 37692), (621, 33504), (648, 32108), (698, 29808), (736, 28269), (828, 25128), (864, 24081), (1047, 19872), (1104, 18846), (1242, 16752), (1296, 16054), (1396, 14904), (1656, 12564), (1863, 11168), (2094, 9936), (2208, 9423), (2484, 8376), (2592, 8027), (2792, 7452), (3141, 6624), (3312, 6282), (3726, 5584), (4188, 4968)]