19985796

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 54163200

約数和(自身を除く): 34177404

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 61, 76, 114, 122, 171, 183, 228, 244, 342, 366, 479, 549, 684, 732, 958, 1098, 1159, 1437, 1916, 2196, 2318, 2874, 3477, 4311, 4636, 5748, 6954, 8622, 9101, 10431, 13908, 17244, 18202, 20862, 27303, 29219, 36404, 41724, 54606, 58438, 81909, 87657, 109212, 116876, 163818, 175314, 262971, 327636, 350628, 525942, 555161, 1051884, 1110322, 1665483, 2220644, 3330966, 4996449, 6661932, 9992898, 19985796]

約数ペア:

[(1, 19985796), (2, 9992898), (3, 6661932), (4, 4996449), (6, 3330966), (9, 2220644), (12, 1665483), (18, 1110322), (19, 1051884), (36, 555161), (38, 525942), (57, 350628), (61, 327636), (76, 262971), (114, 175314), (122, 163818), (171, 116876), (183, 109212), (228, 87657), (244, 81909), (342, 58438), (366, 54606), (479, 41724), (549, 36404), (684, 29219), (732, 27303), (958, 20862), (1098, 18202), (1159, 17244), (1437, 13908), (1916, 10431), (2196, 9101), (2318, 8622), (2874, 6954), (3477, 5748), (4311, 4636)]