28424475

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 54969200

約数和(自身を除く): 26544725

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 61, 75, 95, 109, 171, 183, 225, 285, 305, 327, 475, 545, 549, 855, 915, 981, 1159, 1425, 1525, 1635, 2071, 2725, 2745, 3477, 4275, 4575, 4905, 5795, 6213, 6649, 8175, 10355, 10431, 13725, 17385, 18639, 19947, 24525, 28975, 31065, 33245, 51775, 52155, 59841, 86925, 93195, 99735, 126331, 155325, 166225, 260775, 299205, 378993, 465975, 498675, 631655, 1136979, 1496025, 1894965, 3158275, 5684895, 9474825, 28424475]

約数ペア:

[(1, 28424475), (3, 9474825), (5, 5684895), (9, 3158275), (15, 1894965), (19, 1496025), (25, 1136979), (45, 631655), (57, 498675), (61, 465975), (75, 378993), (95, 299205), (109, 260775), (171, 166225), (183, 155325), (225, 126331), (285, 99735), (305, 93195), (327, 86925), (475, 59841), (545, 52155), (549, 51775), (855, 33245), (915, 31065), (981, 28975), (1159, 24525), (1425, 19947), (1525, 18639), (1635, 17385), (2071, 13725), (2725, 10431), (2745, 10355), (3477, 8175), (4275, 6649), (4575, 6213), (4905, 5795)]