20328720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1193}}^1$

素因数の和:1280

約数の個数: 80

約数和(自身を含む): 63960192

約数和(自身を除く): 43631472

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1193, 1420, 1704, 2130, 2386, 2840, 3408, 3579, 4260, 4772, 5680, 5965, 7158, 8520, 9544, 11930, 14316, 17040, 17895, 19088, 23860, 28632, 35790, 47720, 57264, 71580, 84703, 95440, 143160, 169406, 254109, 286320, 338812, 423515, 508218, 677624, 847030, 1016436, 1270545, 1355248, 1694060, 2032872, 2541090, 3388120, 4065744, 5082180, 6776240, 10164360, 20328720]

約数ペア:

[(1, 20328720), (2, 10164360), (3, 6776240), (4, 5082180), (5, 4065744), (6, 3388120), (8, 2541090), (10, 2032872), (12, 1694060), (15, 1355248), (16, 1270545), (20, 1016436), (24, 847030), (30, 677624), (40, 508218), (48, 423515), (60, 338812), (71, 286320), (80, 254109), (120, 169406), (142, 143160), (213, 95440), (240, 84703), (284, 71580), (355, 57264), (426, 47720), (568, 35790), (710, 28632), (852, 23860), (1065, 19088), (1136, 17895), (1193, 17040), (1420, 14316), (1704, 11930), (2130, 9544), (2386, 8520), (2840, 7158), (3408, 5965), (3579, 5680), (4260, 4772)]