20407275

素因数分解:

$3^3\times 5^2\times 7^2\times {\mathrm{617}}^1$

素因数の和:650

約数の個数: 72

約数和(自身を含む): 43680240

約数和(自身を除く): 23272965

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 49, 63, 75, 105, 135, 147, 175, 189, 225, 245, 315, 441, 525, 617, 675, 735, 945, 1225, 1323, 1575, 1851, 2205, 3085, 3675, 4319, 4725, 5553, 6615, 9255, 11025, 12957, 15425, 16659, 21595, 27765, 30233, 33075, 38871, 46275, 64785, 83295, 90699, 107975, 116613, 138825, 151165, 194355, 272097, 323925, 416475, 453495, 583065, 755825, 816291, 971775, 1360485, 2267475, 2915325, 4081455, 6802425, 20407275]

約数ペア:

[(1, 20407275), (3, 6802425), (5, 4081455), (7, 2915325), (9, 2267475), (15, 1360485), (21, 971775), (25, 816291), (27, 755825), (35, 583065), (45, 453495), (49, 416475), (63, 323925), (75, 272097), (105, 194355), (135, 151165), (147, 138825), (175, 116613), (189, 107975), (225, 90699), (245, 83295), (315, 64785), (441, 46275), (525, 38871), (617, 33075), (675, 30233), (735, 27765), (945, 21595), (1225, 16659), (1323, 15425), (1575, 12957), (1851, 11025), (2205, 9255), (3085, 6615), (3675, 5553), (4319, 4725)]