21031665980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{44519}}^1$

素因数の和:44643

約数の個数: 96

約数和(自身を含む): 50261299200

約数和(自身を除く): 29229633220

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 79, 92, 115, 130, 158, 230, 260, 299, 316, 395, 460, 598, 790, 1027, 1196, 1495, 1580, 1817, 2054, 2990, 3634, 4108, 5135, 5980, 7268, 9085, 10270, 18170, 20540, 23621, 36340, 44519, 47242, 89038, 94484, 118105, 178076, 222595, 236210, 445190, 472420, 578747, 890380, 1023937, 1157494, 2047874, 2314988, 2893735, 3517001, 4095748, 5119685, 5787470, 7034002, 10239370, 11574940, 13311181, 14068004, 17585005, 20478740, 26622362, 35170010, 45721013, 53244724, 66555905, 70340020, 80891023, 91442026, 133111810, 161782046, 182884052, 228605065, 266223620, 323564092, 404455115, 457210130, 808910230, 914420260, 1051583299, 1617820460, 2103166598, 4206333196, 5257916495, 10515832990, 21031665980]

約数ペア:

[(1, 21031665980), (2, 10515832990), (4, 5257916495), (5, 4206333196), (10, 2103166598), (13, 1617820460), (20, 1051583299), (23, 914420260), (26, 808910230), (46, 457210130), (52, 404455115), (65, 323564092), (79, 266223620), (92, 228605065), (115, 182884052), (130, 161782046), (158, 133111810), (230, 91442026), (260, 80891023), (299, 70340020), (316, 66555905), (395, 53244724), (460, 45721013), (598, 35170010), (790, 26622362), (1027, 20478740), (1196, 17585005), (1495, 14068004), (1580, 13311181), (1817, 11574940), (2054, 10239370), (2990, 7034002), (3634, 5787470), (4108, 5119685), (5135, 4095748), (5980, 3517001), (7268, 2893735), (9085, 2314988), (10270, 2047874), (18170, 1157494), (20540, 1023937), (23621, 890380), (36340, 578747), (44519, 472420), (47242, 445190), (89038, 236210), (94484, 222595), (118105, 178076)]