203489920

素因数分解:

$2^7\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2917}}^1$

素因数の和:3045

約数の個数: 64

約数和(自身を含む): 491099400

約数和(自身を除く): 287609480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 320, 436, 545, 640, 872, 1090, 1744, 2180, 2917, 3488, 4360, 5834, 6976, 8720, 11668, 13952, 14585, 17440, 23336, 29170, 34880, 46672, 58340, 69760, 93344, 116680, 186688, 233360, 317953, 373376, 466720, 635906, 933440, 1271812, 1589765, 1866880, 2543624, 3179530, 5087248, 6359060, 10174496, 12718120, 20348992, 25436240, 40697984, 50872480, 101744960, 203489920]

約数ペア:

[(1, 203489920), (2, 101744960), (4, 50872480), (5, 40697984), (8, 25436240), (10, 20348992), (16, 12718120), (20, 10174496), (32, 6359060), (40, 5087248), (64, 3179530), (80, 2543624), (109, 1866880), (128, 1589765), (160, 1271812), (218, 933440), (320, 635906), (436, 466720), (545, 373376), (640, 317953), (872, 233360), (1090, 186688), (1744, 116680), (2180, 93344), (2917, 69760), (3488, 58340), (4360, 46672), (5834, 34880), (6976, 29170), (8720, 23336), (11668, 17440), (13952, 14585)]