4397900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 10936800

約数和(自身を除く): 6538900

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 199, 221, 260, 325, 340, 398, 425, 442, 650, 796, 850, 884, 995, 1105, 1300, 1700, 1990, 2210, 2587, 3383, 3980, 4420, 4975, 5174, 5525, 6766, 9950, 10348, 11050, 12935, 13532, 16915, 19900, 22100, 25870, 33830, 43979, 51740, 64675, 67660, 84575, 87958, 129350, 169150, 175916, 219895, 258700, 338300, 439790, 879580, 1099475, 2198950, 4397900]

約数ペア:

[(1, 4397900), (2, 2198950), (4, 1099475), (5, 879580), (10, 439790), (13, 338300), (17, 258700), (20, 219895), (25, 175916), (26, 169150), (34, 129350), (50, 87958), (52, 84575), (65, 67660), (68, 64675), (85, 51740), (100, 43979), (130, 33830), (170, 25870), (199, 22100), (221, 19900), (260, 16915), (325, 13532), (340, 12935), (398, 11050), (425, 10348), (442, 9950), (650, 6766), (796, 5525), (850, 5174), (884, 4975), (995, 4420), (1105, 3980), (1300, 3383), (1700, 2587), (1990, 2210)]