219635720

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{13693}}^1$

素因数の和:14105

約数の個数: 32

約数和(自身を含む): 495448920

約数和(自身を除く): 275813200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 13693, 16040, 27386, 54772, 68465, 109544, 136930, 273860, 547720, 5490893, 10981786, 21963572, 27454465, 43927144, 54908930, 109817860, 219635720]

約数ペア:

[(1, 219635720), (2, 109817860), (4, 54908930), (5, 43927144), (8, 27454465), (10, 21963572), (20, 10981786), (40, 5490893), (401, 547720), (802, 273860), (1604, 136930), (2005, 109544), (3208, 68465), (4010, 54772), (8020, 27386), (13693, 16040)]