19365975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 37778832

約数和(自身を除く): 18412857

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 61, 75, 83, 85, 153, 183, 225, 249, 255, 305, 415, 425, 549, 747, 765, 915, 1037, 1245, 1275, 1411, 1525, 2075, 2745, 3111, 3735, 3825, 4233, 4575, 5063, 5185, 6225, 7055, 9333, 12699, 13725, 15189, 15555, 18675, 21165, 25315, 25925, 35275, 45567, 46665, 63495, 75945, 77775, 86071, 105825, 126575, 227835, 233325, 258213, 317475, 379725, 430355, 774639, 1139175, 1291065, 2151775, 3873195, 6455325, 19365975]

約数ペア:

[(1, 19365975), (3, 6455325), (5, 3873195), (9, 2151775), (15, 1291065), (17, 1139175), (25, 774639), (45, 430355), (51, 379725), (61, 317475), (75, 258213), (83, 233325), (85, 227835), (153, 126575), (183, 105825), (225, 86071), (249, 77775), (255, 75945), (305, 63495), (415, 46665), (425, 45567), (549, 35275), (747, 25925), (765, 25315), (915, 21165), (1037, 18675), (1245, 15555), (1275, 15189), (1411, 13725), (1525, 12699), (2075, 9333), (2745, 7055), (3111, 6225), (3735, 5185), (3825, 5063), (4233, 4575)]