221392980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{409987}}^1$

素因数の和:410005

約数の個数: 48

約数和(自身を含む): 688779840

約数和(自身を除く): 467386860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 409987, 819974, 1229961, 1639948, 2049935, 2459922, 3689883, 4099870, 4919844, 6149805, 7379766, 8199740, 11069649, 12299610, 14759532, 18449415, 22139298, 24599220, 36898830, 44278596, 55348245, 73797660, 110696490, 221392980]

約数ペア:

[(1, 221392980), (2, 110696490), (3, 73797660), (4, 55348245), (5, 44278596), (6, 36898830), (9, 24599220), (10, 22139298), (12, 18449415), (15, 14759532), (18, 12299610), (20, 11069649), (27, 8199740), (30, 7379766), (36, 6149805), (45, 4919844), (54, 4099870), (60, 3689883), (90, 2459922), (108, 2049935), (135, 1639948), (180, 1229961), (270, 819974), (540, 409987)]