20874436

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 44241120

約数和(自身を除く): 23366684

約数列:

[1, 2, 4, 11, 17, 22, 34, 43, 44, 59, 68, 86, 118, 121, 172, 187, 236, 242, 374, 473, 484, 649, 731, 748, 946, 1003, 1298, 1462, 1892, 2006, 2057, 2537, 2596, 2924, 4012, 4114, 5074, 5203, 7139, 8041, 8228, 10148, 10406, 11033, 14278, 16082, 20812, 22066, 27907, 28556, 32164, 43129, 44132, 55814, 86258, 88451, 111628, 121363, 172516, 176902, 242726, 306977, 353804, 474419, 485452, 613954, 948838, 1227908, 1897676, 5218609, 10437218, 20874436]

約数ペア:

[(1, 20874436), (2, 10437218), (4, 5218609), (11, 1897676), (17, 1227908), (22, 948838), (34, 613954), (43, 485452), (44, 474419), (59, 353804), (68, 306977), (86, 242726), (118, 176902), (121, 172516), (172, 121363), (187, 111628), (236, 88451), (242, 86258), (374, 55814), (473, 44132), (484, 43129), (649, 32164), (731, 28556), (748, 27907), (946, 22066), (1003, 20812), (1298, 16082), (1462, 14278), (1892, 11033), (2006, 10406), (2057, 10148), (2537, 8228), (2596, 8041), (2924, 7139), (4012, 5203), (4114, 5074)]