18539775

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 36386064

約数和(自身を除く): 17846289

約数列:

[1, 3, 5, 9, 15, 17, 25, 37, 45, 51, 75, 85, 111, 131, 153, 185, 225, 255, 333, 393, 425, 555, 629, 655, 765, 925, 1179, 1275, 1665, 1887, 1965, 2227, 2775, 3145, 3275, 3825, 4847, 5661, 5895, 6681, 8325, 9435, 9825, 11135, 14541, 15725, 20043, 24235, 28305, 29475, 33405, 43623, 47175, 55675, 72705, 82399, 100215, 121175, 141525, 167025, 218115, 247197, 363525, 411995, 501075, 741591, 1090575, 1235985, 2059975, 3707955, 6179925, 18539775]

約数ペア:

[(1, 18539775), (3, 6179925), (5, 3707955), (9, 2059975), (15, 1235985), (17, 1090575), (25, 741591), (37, 501075), (45, 411995), (51, 363525), (75, 247197), (85, 218115), (111, 167025), (131, 141525), (153, 121175), (185, 100215), (225, 82399), (255, 72705), (333, 55675), (393, 47175), (425, 43623), (555, 33405), (629, 29475), (655, 28305), (765, 24235), (925, 20043), (1179, 15725), (1275, 14541), (1665, 11135), (1887, 9825), (1965, 9435), (2227, 8325), (2775, 6681), (3145, 5895), (3275, 5661), (3825, 4847)]