87972640

素因数分解:

$2^5\times 5^1\times 7^4\times {\mathrm{229}}^1$

素因数の和:272

約数の個数: 120

約数和(自身を含む): 243518940

約数和(自身を除く): 155546300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 229, 245, 280, 343, 392, 458, 490, 560, 686, 784, 916, 980, 1120, 1145, 1372, 1568, 1603, 1715, 1832, 1960, 2290, 2401, 2744, 3206, 3430, 3664, 3920, 4580, 4802, 5488, 6412, 6860, 7328, 7840, 8015, 9160, 9604, 10976, 11221, 12005, 12824, 13720, 16030, 18320, 19208, 22442, 24010, 25648, 27440, 32060, 36640, 38416, 44884, 48020, 51296, 54880, 56105, 64120, 76832, 78547, 89768, 96040, 112210, 128240, 157094, 179536, 192080, 224420, 256480, 314188, 359072, 384160, 392735, 448840, 549829, 628376, 785470, 897680, 1099658, 1256752, 1570940, 1795360, 2199316, 2513504, 2749145, 3141880, 4398632, 5498290, 6283760, 8797264, 10996580, 12567520, 17594528, 21993160, 43986320, 87972640]

約数ペア:

[(1, 87972640), (2, 43986320), (4, 21993160), (5, 17594528), (7, 12567520), (8, 10996580), (10, 8797264), (14, 6283760), (16, 5498290), (20, 4398632), (28, 3141880), (32, 2749145), (35, 2513504), (40, 2199316), (49, 1795360), (56, 1570940), (70, 1256752), (80, 1099658), (98, 897680), (112, 785470), (140, 628376), (160, 549829), (196, 448840), (224, 392735), (229, 384160), (245, 359072), (280, 314188), (343, 256480), (392, 224420), (458, 192080), (490, 179536), (560, 157094), (686, 128240), (784, 112210), (916, 96040), (980, 89768), (1120, 78547), (1145, 76832), (1372, 64120), (1568, 56105), (1603, 54880), (1715, 51296), (1832, 48020), (1960, 44884), (2290, 38416), (2401, 36640), (2744, 32060), (3206, 27440), (3430, 25648), (3664, 24010), (3920, 22442), (4580, 19208), (4802, 18320), (5488, 16030), (6412, 13720), (6860, 12824), (7328, 12005), (7840, 11221), (8015, 10976), (9160, 9604)]