20139760

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4127}}^1$

素因数の和:4201

約数の個数: 40

約数和(自身を含む): 47604096

約数和(自身を除く): 27464336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4127, 4880, 8254, 16508, 20635, 33016, 41270, 66032, 82540, 165080, 251747, 330160, 503494, 1006988, 1258735, 2013976, 2517470, 4027952, 5034940, 10069880, 20139760]

約数ペア:

[(1, 20139760), (2, 10069880), (4, 5034940), (5, 4027952), (8, 2517470), (10, 2013976), (16, 1258735), (20, 1006988), (40, 503494), (61, 330160), (80, 251747), (122, 165080), (244, 82540), (305, 66032), (488, 41270), (610, 33016), (976, 20635), (1220, 16508), (2440, 8254), (4127, 4880)]