78987220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23369}}^1$

素因数の和:23404

約数の個数: 36

約数和(自身を含む): 179621820

約数和(自身を除く): 100634600

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 23369, 46738, 93476, 116845, 233690, 303797, 467380, 607594, 1215188, 1518985, 3037970, 3949361, 6075940, 7898722, 15797444, 19746805, 39493610, 78987220]

約数ペア:

[(1, 78987220), (2, 39493610), (4, 19746805), (5, 15797444), (10, 7898722), (13, 6075940), (20, 3949361), (26, 3037970), (52, 1518985), (65, 1215188), (130, 607594), (169, 467380), (260, 303797), (338, 233690), (676, 116845), (845, 93476), (1690, 46738), (3380, 23369)]