18172700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2031

約数の個数: 72

約数和(自身を含む): 48559392

約数和(自身を除く): 30386692

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 1997, 2275, 3994, 4550, 7988, 9100, 9985, 13979, 19970, 25961, 27958, 39940, 49925, 51922, 55916, 69895, 99850, 103844, 129805, 139790, 181727, 199700, 259610, 279580, 349475, 363454, 519220, 649025, 698950, 726908, 908635, 1298050, 1397900, 1817270, 2596100, 3634540, 4543175, 9086350, 18172700]

約数ペア:

[(1, 18172700), (2, 9086350), (4, 4543175), (5, 3634540), (7, 2596100), (10, 1817270), (13, 1397900), (14, 1298050), (20, 908635), (25, 726908), (26, 698950), (28, 649025), (35, 519220), (50, 363454), (52, 349475), (65, 279580), (70, 259610), (91, 199700), (100, 181727), (130, 139790), (140, 129805), (175, 103844), (182, 99850), (260, 69895), (325, 55916), (350, 51922), (364, 49925), (455, 39940), (650, 27958), (700, 25961), (910, 19970), (1300, 13979), (1820, 9985), (1997, 9100), (2275, 7988), (3994, 4550)]