20004075

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1013

約数の個数: 72

約数和(自身を含む): 44143008

約数和(自身を除く): 24138933

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 35, 39, 45, 63, 65, 75, 91, 105, 117, 175, 195, 225, 273, 315, 325, 455, 525, 585, 819, 975, 977, 1365, 1575, 2275, 2925, 2931, 4095, 4885, 6825, 6839, 8793, 12701, 14655, 20475, 20517, 24425, 34195, 38103, 43965, 61551, 63505, 73275, 88907, 102585, 114309, 170975, 190515, 219825, 266721, 307755, 317525, 444535, 512925, 571545, 800163, 952575, 1333605, 1538775, 2222675, 2857725, 4000815, 6668025, 20004075]

約数ペア:

[(1, 20004075), (3, 6668025), (5, 4000815), (7, 2857725), (9, 2222675), (13, 1538775), (15, 1333605), (21, 952575), (25, 800163), (35, 571545), (39, 512925), (45, 444535), (63, 317525), (65, 307755), (75, 266721), (91, 219825), (105, 190515), (117, 170975), (175, 114309), (195, 102585), (225, 88907), (273, 73275), (315, 63505), (325, 61551), (455, 43965), (525, 38103), (585, 34195), (819, 24425), (975, 20517), (977, 20475), (1365, 14655), (1575, 12701), (2275, 8793), (2925, 6839), (2931, 6825), (4095, 4885)]