20318025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 41753280

約数和(自身を除く): 21435255

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 169, 175, 195, 229, 273, 325, 455, 507, 525, 687, 845, 975, 1145, 1183, 1365, 1603, 2275, 2535, 2977, 3435, 3549, 4225, 4809, 5725, 5915, 6825, 8015, 8931, 12675, 14885, 17175, 17745, 20839, 24045, 29575, 38701, 40075, 44655, 62517, 74425, 88725, 104195, 116103, 120225, 193505, 223275, 270907, 312585, 520975, 580515, 812721, 967525, 1354535, 1562925, 2902575, 4063605, 6772675, 20318025]

約数ペア:

[(1, 20318025), (3, 6772675), (5, 4063605), (7, 2902575), (13, 1562925), (15, 1354535), (21, 967525), (25, 812721), (35, 580515), (39, 520975), (65, 312585), (75, 270907), (91, 223275), (105, 193505), (169, 120225), (175, 116103), (195, 104195), (229, 88725), (273, 74425), (325, 62517), (455, 44655), (507, 40075), (525, 38701), (687, 29575), (845, 24045), (975, 20839), (1145, 17745), (1183, 17175), (1365, 14885), (1603, 12675), (2275, 8931), (2535, 8015), (2977, 6825), (3435, 5915), (3549, 5725), (4225, 4809)]