21417560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28181}}^1$

素因数の和:28211

約数の個数: 32

約数和(自身を含む): 50727600

約数和(自身を除く): 29310040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28181, 56362, 112724, 140905, 225448, 281810, 535439, 563620, 1070878, 1127240, 2141756, 2677195, 4283512, 5354390, 10708780, 21417560]

約数ペア:

[(1, 21417560), (2, 10708780), (4, 5354390), (5, 4283512), (8, 2677195), (10, 2141756), (19, 1127240), (20, 1070878), (38, 563620), (40, 535439), (76, 281810), (95, 225448), (152, 140905), (190, 112724), (380, 56362), (760, 28181)]