81452020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{523}}^1\times {\mathrm{599}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 184867200

約数和(自身を除く): 103415180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 523, 599, 1046, 1198, 2092, 2396, 2615, 2995, 5230, 5990, 6799, 7787, 10460, 11980, 13598, 15574, 27196, 31148, 33995, 38935, 67990, 77870, 135980, 155740, 313277, 626554, 1253108, 1566385, 3132770, 4072601, 6265540, 8145202, 16290404, 20363005, 40726010, 81452020]

約数ペア:

[(1, 81452020), (2, 40726010), (4, 20363005), (5, 16290404), (10, 8145202), (13, 6265540), (20, 4072601), (26, 3132770), (52, 1566385), (65, 1253108), (130, 626554), (260, 313277), (523, 155740), (599, 135980), (1046, 77870), (1198, 67990), (2092, 38935), (2396, 33995), (2615, 31148), (2995, 27196), (5230, 15574), (5990, 13598), (6799, 11980), (7787, 10460)]