18830721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2999}}^1$

素因数の和:3045

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 13425279

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 2999, 6279, 8997, 20993, 38987, 62979, 68977, 116961, 206931, 272909, 482839, 818727, 896701, 1448517, 2690103, 6276907, 18830721]

約数ペア:

[(1, 18830721), (3, 6276907), (7, 2690103), (13, 1448517), (21, 896701), (23, 818727), (39, 482839), (69, 272909), (91, 206931), (161, 116961), (273, 68977), (299, 62979), (483, 38987), (897, 20993), (2093, 8997), (2999, 6279)]