9997920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:205

約数の個数: 144

約数和(自身を含む): 35026992

約数和(自身を除く): 25029072

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 53, 60, 72, 80, 90, 96, 106, 120, 131, 144, 159, 160, 180, 212, 240, 262, 265, 288, 318, 360, 393, 424, 477, 480, 524, 530, 636, 655, 720, 786, 795, 848, 954, 1048, 1060, 1179, 1272, 1310, 1440, 1572, 1590, 1696, 1908, 1965, 2096, 2120, 2358, 2385, 2544, 2620, 3144, 3180, 3816, 3930, 4192, 4240, 4716, 4770, 5088, 5240, 5895, 6288, 6360, 6943, 7632, 7860, 8480, 9432, 9540, 10480, 11790, 12576, 12720, 13886, 15264, 15720, 18864, 19080, 20829, 20960, 23580, 25440, 27772, 31440, 34715, 37728, 38160, 41658, 47160, 55544, 62487, 62880, 69430, 76320, 83316, 94320, 104145, 111088, 124974, 138860, 166632, 188640, 208290, 222176, 249948, 277720, 312435, 333264, 416580, 499896, 555440, 624870, 666528, 833160, 999792, 1110880, 1249740, 1666320, 1999584, 2499480, 3332640, 4998960, 9997920]

約数ペア:

[(1, 9997920), (2, 4998960), (3, 3332640), (4, 2499480), (5, 1999584), (6, 1666320), (8, 1249740), (9, 1110880), (10, 999792), (12, 833160), (15, 666528), (16, 624870), (18, 555440), (20, 499896), (24, 416580), (30, 333264), (32, 312435), (36, 277720), (40, 249948), (45, 222176), (48, 208290), (53, 188640), (60, 166632), (72, 138860), (80, 124974), (90, 111088), (96, 104145), (106, 94320), (120, 83316), (131, 76320), (144, 69430), (159, 62880), (160, 62487), (180, 55544), (212, 47160), (240, 41658), (262, 38160), (265, 37728), (288, 34715), (318, 31440), (360, 27772), (393, 25440), (424, 23580), (477, 20960), (480, 20829), (524, 19080), (530, 18864), (636, 15720), (655, 15264), (720, 13886), (786, 12720), (795, 12576), (848, 11790), (954, 10480), (1048, 9540), (1060, 9432), (1179, 8480), (1272, 7860), (1310, 7632), (1440, 6943), (1572, 6360), (1590, 6288), (1696, 5895), (1908, 5240), (1965, 5088), (2096, 4770), (2120, 4716), (2358, 4240), (2385, 4192), (2544, 3930), (2620, 3816), (3144, 3180)]