19883680

素因数分解:

$2^5\times 5^1\times {\mathrm{151}}^1\times {\mathrm{823}}^1$

素因数の和:989

約数の個数: 48

約数和(自身を含む): 47343744

約数和(自身を除く): 27460064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 151, 160, 302, 604, 755, 823, 1208, 1510, 1646, 2416, 3020, 3292, 4115, 4832, 6040, 6584, 8230, 12080, 13168, 16460, 24160, 26336, 32920, 65840, 124273, 131680, 248546, 497092, 621365, 994184, 1242730, 1988368, 2485460, 3976736, 4970920, 9941840, 19883680]

約数ペア:

[(1, 19883680), (2, 9941840), (4, 4970920), (5, 3976736), (8, 2485460), (10, 1988368), (16, 1242730), (20, 994184), (32, 621365), (40, 497092), (80, 248546), (151, 131680), (160, 124273), (302, 65840), (604, 32920), (755, 26336), (823, 24160), (1208, 16460), (1510, 13168), (1646, 12080), (2416, 8230), (3020, 6584), (3292, 6040), (4115, 4832)]