81465000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{5431}}^1$

素因数の和:5460

約数の個数: 80

約数和(自身を含む): 254543520

約数和(自身を除く): 173078520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 125, 150, 200, 250, 300, 375, 500, 600, 625, 750, 1000, 1250, 1500, 1875, 2500, 3000, 3750, 5000, 5431, 7500, 10862, 15000, 16293, 21724, 27155, 32586, 43448, 54310, 65172, 81465, 108620, 130344, 135775, 162930, 217240, 271550, 325860, 407325, 543100, 651720, 678875, 814650, 1086200, 1357750, 1629300, 2036625, 2715500, 3258600, 3394375, 4073250, 5431000, 6788750, 8146500, 10183125, 13577500, 16293000, 20366250, 27155000, 40732500, 81465000]

約数ペア:

[(1, 81465000), (2, 40732500), (3, 27155000), (4, 20366250), (5, 16293000), (6, 13577500), (8, 10183125), (10, 8146500), (12, 6788750), (15, 5431000), (20, 4073250), (24, 3394375), (25, 3258600), (30, 2715500), (40, 2036625), (50, 1629300), (60, 1357750), (75, 1086200), (100, 814650), (120, 678875), (125, 651720), (150, 543100), (200, 407325), (250, 325860), (300, 271550), (375, 217240), (500, 162930), (600, 135775), (625, 130344), (750, 108620), (1000, 81465), (1250, 65172), (1500, 54310), (1875, 43448), (2500, 32586), (3000, 27155), (3750, 21724), (5000, 16293), (5431, 15000), (7500, 10862)]