204030440

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{28181}}^1$

素因数の和:28373

約数の個数: 32

約数和(自身を含む): 461621160

約数和(自身を除く): 257590720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 28181, 56362, 112724, 140905, 225448, 281810, 563620, 1127240, 5100761, 10201522, 20403044, 25503805, 40806088, 51007610, 102015220, 204030440]

約数ペア:

[(1, 204030440), (2, 102015220), (4, 51007610), (5, 40806088), (8, 25503805), (10, 20403044), (20, 10201522), (40, 5100761), (181, 1127240), (362, 563620), (724, 281810), (905, 225448), (1448, 140905), (1810, 112724), (3620, 56362), (7240, 28181)]