15721388520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{74821}}^1$

素因数の和:74955

約数の個数: 128

約数和(自身を含む): 50424042240

約数和(自身を除く): 34702653720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 103, 120, 136, 170, 204, 206, 255, 309, 340, 408, 412, 510, 515, 618, 680, 824, 1020, 1030, 1236, 1545, 1751, 2040, 2060, 2472, 3090, 3502, 4120, 5253, 6180, 7004, 8755, 10506, 12360, 14008, 17510, 21012, 26265, 35020, 42024, 52530, 70040, 74821, 105060, 149642, 210120, 224463, 299284, 374105, 448926, 598568, 748210, 897852, 1122315, 1271957, 1496420, 1795704, 2244630, 2543914, 2992840, 3815871, 4489260, 5087828, 6359785, 7631742, 7706563, 8978520, 10175656, 12719570, 15263484, 15413126, 19079355, 23119689, 25439140, 30526968, 30826252, 38158710, 38532815, 46239378, 50878280, 61652504, 76317420, 77065630, 92478756, 115598445, 131011571, 152634840, 154131260, 184957512, 231196890, 262023142, 308262520, 393034713, 462393780, 524046284, 655057855, 786069426, 924787560, 1048092568, 1310115710, 1572138852, 1965173565, 2620231420, 3144277704, 3930347130, 5240462840, 7860694260, 15721388520]

約数ペア:

[(1, 15721388520), (2, 7860694260), (3, 5240462840), (4, 3930347130), (5, 3144277704), (6, 2620231420), (8, 1965173565), (10, 1572138852), (12, 1310115710), (15, 1048092568), (17, 924787560), (20, 786069426), (24, 655057855), (30, 524046284), (34, 462393780), (40, 393034713), (51, 308262520), (60, 262023142), (68, 231196890), (85, 184957512), (102, 154131260), (103, 152634840), (120, 131011571), (136, 115598445), (170, 92478756), (204, 77065630), (206, 76317420), (255, 61652504), (309, 50878280), (340, 46239378), (408, 38532815), (412, 38158710), (510, 30826252), (515, 30526968), (618, 25439140), (680, 23119689), (824, 19079355), (1020, 15413126), (1030, 15263484), (1236, 12719570), (1545, 10175656), (1751, 8978520), (2040, 7706563), (2060, 7631742), (2472, 6359785), (3090, 5087828), (3502, 4489260), (4120, 3815871), (5253, 2992840), (6180, 2543914), (7004, 2244630), (8755, 1795704), (10506, 1496420), (12360, 1271957), (14008, 1122315), (17510, 897852), (21012, 748210), (26265, 598568), (35020, 448926), (42024, 374105), (52530, 299284), (70040, 224463), (74821, 210120), (105060, 149642)]