81840020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1\times {\mathrm{229}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 175271040

約数和(自身を除く): 93431020

約数列:

[1, 2, 4, 5, 10, 20, 107, 167, 214, 229, 334, 428, 458, 535, 668, 835, 916, 1070, 1145, 1670, 2140, 2290, 3340, 4580, 17869, 24503, 35738, 38243, 49006, 71476, 76486, 89345, 98012, 122515, 152972, 178690, 191215, 245030, 357380, 382430, 490060, 764860, 4092001, 8184002, 16368004, 20460005, 40920010, 81840020]

約数ペア:

[(1, 81840020), (2, 40920010), (4, 20460005), (5, 16368004), (10, 8184002), (20, 4092001), (107, 764860), (167, 490060), (214, 382430), (229, 357380), (334, 245030), (428, 191215), (458, 178690), (535, 152972), (668, 122515), (835, 98012), (916, 89345), (1070, 76486), (1145, 71476), (1670, 49006), (2140, 38243), (2290, 35738), (3340, 24503), (4580, 17869)]