20784433880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{46307}}^1$

素因数の和:46561

約数の個数: 96

約数和(自身を含む): 54638809200

約数和(自身を除く): 33854375320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 229, 245, 280, 392, 458, 490, 916, 980, 1145, 1603, 1832, 1960, 2290, 3206, 4580, 6412, 8015, 9160, 11221, 12824, 16030, 22442, 32060, 44884, 46307, 56105, 64120, 89768, 92614, 112210, 185228, 224420, 231535, 324149, 370456, 448840, 463070, 648298, 926140, 1296596, 1620745, 1852280, 2269043, 2593192, 3241490, 4538086, 6482980, 9076172, 10604303, 11345215, 12965960, 18152344, 21208606, 22690430, 42417212, 45380860, 53021515, 74230121, 84834424, 90761720, 106043030, 148460242, 212086060, 296920484, 371150605, 424172120, 519610847, 593840968, 742301210, 1039221694, 1484602420, 2078443388, 2598054235, 2969204840, 4156886776, 5196108470, 10392216940, 20784433880]

約数ペア:

[(1, 20784433880), (2, 10392216940), (4, 5196108470), (5, 4156886776), (7, 2969204840), (8, 2598054235), (10, 2078443388), (14, 1484602420), (20, 1039221694), (28, 742301210), (35, 593840968), (40, 519610847), (49, 424172120), (56, 371150605), (70, 296920484), (98, 212086060), (140, 148460242), (196, 106043030), (229, 90761720), (245, 84834424), (280, 74230121), (392, 53021515), (458, 45380860), (490, 42417212), (916, 22690430), (980, 21208606), (1145, 18152344), (1603, 12965960), (1832, 11345215), (1960, 10604303), (2290, 9076172), (3206, 6482980), (4580, 4538086), (6412, 3241490), (8015, 2593192), (9160, 2269043), (11221, 1852280), (12824, 1620745), (16030, 1296596), (22442, 926140), (32060, 648298), (44884, 463070), (46307, 448840), (56105, 370456), (64120, 324149), (89768, 231535), (92614, 224420), (112210, 185228)]