21921224

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 46675440

約数和(自身を除く): 24754216

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 53, 82, 97, 104, 106, 164, 194, 212, 328, 388, 424, 533, 689, 776, 1066, 1261, 1378, 2132, 2173, 2522, 2756, 3977, 4264, 4346, 5044, 5141, 5512, 7954, 8692, 10088, 10282, 15908, 17384, 20564, 28249, 31816, 41128, 51701, 56498, 66833, 103402, 112996, 133666, 206804, 210781, 225992, 267332, 413608, 421562, 534664, 843124, 1686248, 2740153, 5480306, 10960612, 21921224]

約数ペア:

[(1, 21921224), (2, 10960612), (4, 5480306), (8, 2740153), (13, 1686248), (26, 843124), (41, 534664), (52, 421562), (53, 413608), (82, 267332), (97, 225992), (104, 210781), (106, 206804), (164, 133666), (194, 112996), (212, 103402), (328, 66833), (388, 56498), (424, 51701), (533, 41128), (689, 31816), (776, 28249), (1066, 20564), (1261, 17384), (1378, 15908), (2132, 10282), (2173, 10088), (2522, 8692), (2756, 7954), (3977, 5512), (4264, 5141), (4346, 5044)]