289400775

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^3$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 515065248

約数和(自身を除く): 225664473

約数列:

[1, 3, 5, 15, 17, 25, 51, 61, 75, 85, 183, 255, 305, 425, 915, 1037, 1275, 1525, 3111, 3721, 4575, 5185, 11163, 15555, 18605, 25925, 55815, 63257, 77775, 93025, 189771, 226981, 279075, 316285, 680943, 948855, 1134905, 1581425, 3404715, 3858677, 4744275, 5674525, 11576031, 17023575, 19293385, 57880155, 96466925, 289400775]

約数ペア:

[(1, 289400775), (3, 96466925), (5, 57880155), (15, 19293385), (17, 17023575), (25, 11576031), (51, 5674525), (61, 4744275), (75, 3858677), (85, 3404715), (183, 1581425), (255, 1134905), (305, 948855), (425, 680943), (915, 316285), (1037, 279075), (1275, 226981), (1525, 189771), (3111, 93025), (3721, 77775), (4575, 63257), (5185, 55815), (11163, 25925), (15555, 18605)]