21540190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:841

約数の個数: 64

約数和(自身を含む): 49019904

約数和(自身を除く): 27479714

約数列:

[1, 2, 5, 7, 10, 14, 17, 23, 34, 35, 46, 70, 85, 115, 119, 161, 170, 230, 238, 322, 391, 595, 782, 787, 805, 1190, 1574, 1610, 1955, 2737, 3910, 3935, 5474, 5509, 7870, 11018, 13379, 13685, 18101, 26758, 27370, 27545, 36202, 55090, 66895, 90505, 93653, 126707, 133790, 181010, 187306, 253414, 307717, 468265, 615434, 633535, 936530, 1267070, 1538585, 2154019, 3077170, 4308038, 10770095, 21540190]

約数ペア:

[(1, 21540190), (2, 10770095), (5, 4308038), (7, 3077170), (10, 2154019), (14, 1538585), (17, 1267070), (23, 936530), (34, 633535), (35, 615434), (46, 468265), (70, 307717), (85, 253414), (115, 187306), (119, 181010), (161, 133790), (170, 126707), (230, 93653), (238, 90505), (322, 66895), (391, 55090), (595, 36202), (782, 27545), (787, 27370), (805, 26758), (1190, 18101), (1574, 13685), (1610, 13379), (1955, 11018), (2737, 7870), (3910, 5509), (3935, 5474)]