21053344

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1$

素因数の和:282

約数の個数: 72

約数和(自身を含む): 47730060

約数和(自身を除く): 26676716

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 169, 208, 221, 229, 272, 338, 416, 442, 458, 544, 676, 884, 916, 1352, 1768, 1832, 2704, 2873, 2977, 3536, 3664, 3893, 5408, 5746, 5954, 7072, 7328, 7786, 11492, 11908, 15572, 22984, 23816, 31144, 38701, 45968, 47632, 50609, 62288, 77402, 91936, 95264, 101218, 124576, 154804, 202436, 309608, 404872, 619216, 657917, 809744, 1238432, 1315834, 1619488, 2631668, 5263336, 10526672, 21053344]

約数ペア:

[(1, 21053344), (2, 10526672), (4, 5263336), (8, 2631668), (13, 1619488), (16, 1315834), (17, 1238432), (26, 809744), (32, 657917), (34, 619216), (52, 404872), (68, 309608), (104, 202436), (136, 154804), (169, 124576), (208, 101218), (221, 95264), (229, 91936), (272, 77402), (338, 62288), (416, 50609), (442, 47632), (458, 45968), (544, 38701), (676, 31144), (884, 23816), (916, 22984), (1352, 15572), (1768, 11908), (1832, 11492), (2704, 7786), (2873, 7328), (2977, 7072), (3536, 5954), (3664, 5746), (3893, 5408)]