28250325

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 54317952

約数和(自身を除く): 26067627

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 53, 69, 75, 103, 115, 159, 207, 225, 265, 309, 345, 477, 515, 575, 795, 927, 1035, 1219, 1325, 1545, 1725, 2369, 2385, 2575, 3657, 3975, 4635, 5175, 5459, 6095, 7107, 7725, 10971, 11845, 11925, 16377, 18285, 21321, 23175, 27295, 30475, 35535, 49131, 54855, 59225, 81885, 91425, 106605, 125557, 136475, 177675, 245655, 274275, 376671, 409425, 533025, 627785, 1130013, 1228275, 1883355, 3138925, 5650065, 9416775, 28250325]

約数ペア:

[(1, 28250325), (3, 9416775), (5, 5650065), (9, 3138925), (15, 1883355), (23, 1228275), (25, 1130013), (45, 627785), (53, 533025), (69, 409425), (75, 376671), (103, 274275), (115, 245655), (159, 177675), (207, 136475), (225, 125557), (265, 106605), (309, 91425), (345, 81885), (477, 59225), (515, 54855), (575, 49131), (795, 35535), (927, 30475), (1035, 27295), (1219, 23175), (1325, 21321), (1545, 18285), (1725, 16377), (2369, 11925), (2385, 11845), (2575, 10971), (3657, 7725), (3975, 7107), (4635, 6095), (5175, 5459)]