21132375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 18404265

約数列:

[1, 3, 5, 11, 15, 25, 33, 47, 55, 75, 109, 125, 141, 165, 235, 275, 327, 375, 517, 545, 705, 825, 1175, 1199, 1375, 1551, 1635, 2585, 2725, 3525, 3597, 4125, 5123, 5875, 5995, 7755, 8175, 12925, 13625, 15369, 17625, 17985, 25615, 29975, 38775, 40875, 56353, 64625, 76845, 89925, 128075, 149875, 169059, 193875, 281765, 384225, 449625, 640375, 845295, 1408825, 1921125, 4226475, 7044125, 21132375]

約数ペア:

[(1, 21132375), (3, 7044125), (5, 4226475), (11, 1921125), (15, 1408825), (25, 845295), (33, 640375), (47, 449625), (55, 384225), (75, 281765), (109, 193875), (125, 169059), (141, 149875), (165, 128075), (235, 89925), (275, 76845), (327, 64625), (375, 56353), (517, 40875), (545, 38775), (705, 29975), (825, 25615), (1175, 17985), (1199, 17625), (1375, 15369), (1551, 13625), (1635, 12925), (2585, 8175), (2725, 7755), (3525, 5995), (3597, 5875), (4125, 5123)]