20701648

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:101

約数の個数: 90

約数和(自身を含む): 48098918

約数和(自身を除く): 27397270

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 37, 44, 68, 74, 88, 121, 136, 148, 176, 187, 242, 272, 289, 296, 374, 407, 484, 578, 592, 629, 748, 814, 968, 1156, 1258, 1496, 1628, 1936, 2057, 2312, 2516, 2992, 3179, 3256, 4114, 4477, 4624, 5032, 6358, 6512, 6919, 8228, 8954, 10064, 10693, 12716, 13838, 16456, 17908, 21386, 25432, 27676, 32912, 34969, 35816, 42772, 50864, 55352, 69938, 71632, 76109, 85544, 110704, 117623, 139876, 152218, 171088, 235246, 279752, 304436, 470492, 559504, 608872, 940984, 1217744, 1293853, 1881968, 2587706, 5175412, 10350824, 20701648]

約数ペア:

[(1, 20701648), (2, 10350824), (4, 5175412), (8, 2587706), (11, 1881968), (16, 1293853), (17, 1217744), (22, 940984), (34, 608872), (37, 559504), (44, 470492), (68, 304436), (74, 279752), (88, 235246), (121, 171088), (136, 152218), (148, 139876), (176, 117623), (187, 110704), (242, 85544), (272, 76109), (289, 71632), (296, 69938), (374, 55352), (407, 50864), (484, 42772), (578, 35816), (592, 34969), (629, 32912), (748, 27676), (814, 25432), (968, 21386), (1156, 17908), (1258, 16456), (1496, 13838), (1628, 12716), (1936, 10693), (2057, 10064), (2312, 8954), (2516, 8228), (2992, 6919), (3179, 6512), (3256, 6358), (4114, 5032), (4477, 4624)]