21993160

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{229}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 57980700

約数和(自身を除く): 35987540

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 229, 245, 280, 343, 392, 458, 490, 686, 916, 980, 1145, 1372, 1603, 1715, 1832, 1960, 2290, 2401, 2744, 3206, 3430, 4580, 4802, 6412, 6860, 8015, 9160, 9604, 11221, 12005, 12824, 13720, 16030, 19208, 22442, 24010, 32060, 44884, 48020, 56105, 64120, 78547, 89768, 96040, 112210, 157094, 224420, 314188, 392735, 448840, 549829, 628376, 785470, 1099658, 1570940, 2199316, 2749145, 3141880, 4398632, 5498290, 10996580, 21993160]

約数ペア:

[(1, 21993160), (2, 10996580), (4, 5498290), (5, 4398632), (7, 3141880), (8, 2749145), (10, 2199316), (14, 1570940), (20, 1099658), (28, 785470), (35, 628376), (40, 549829), (49, 448840), (56, 392735), (70, 314188), (98, 224420), (140, 157094), (196, 112210), (229, 96040), (245, 89768), (280, 78547), (343, 64120), (392, 56105), (458, 48020), (490, 44884), (686, 32060), (916, 24010), (980, 22442), (1145, 19208), (1372, 16030), (1603, 13720), (1715, 12824), (1832, 12005), (1960, 11221), (2290, 9604), (2401, 9160), (2744, 8015), (3206, 6860), (3430, 6412), (4580, 4802)]