208486480

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23909}}^1$

素因数の和:24031

約数の個数: 40

約数和(自身を含む): 489198600

約数和(自身を除く): 280712120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 23909, 47818, 95636, 119545, 191272, 239090, 382544, 478180, 956360, 1912720, 2606081, 5212162, 10424324, 13030405, 20848648, 26060810, 41697296, 52121620, 104243240, 208486480]

約数ペア:

[(1, 208486480), (2, 104243240), (4, 52121620), (5, 41697296), (8, 26060810), (10, 20848648), (16, 13030405), (20, 10424324), (40, 5212162), (80, 2606081), (109, 1912720), (218, 956360), (436, 478180), (545, 382544), (872, 239090), (1090, 191272), (1744, 119545), (2180, 95636), (4360, 47818), (8720, 23909)]