21380625

素因数分解:

$3^3\times 5^4\times 7^1\times {\mathrm{181}}^1$

素因数の和:217

約数の個数: 80

約数和(自身を含む): 45485440

約数和(自身を除く): 24104815

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 125, 135, 175, 181, 189, 225, 315, 375, 525, 543, 625, 675, 875, 905, 945, 1125, 1267, 1575, 1629, 1875, 2625, 2715, 3375, 3801, 4375, 4525, 4725, 4887, 5625, 6335, 7875, 8145, 11403, 13125, 13575, 16875, 19005, 22625, 23625, 24435, 31675, 34209, 39375, 40725, 57015, 67875, 95025, 113125, 118125, 122175, 158375, 171045, 203625, 285075, 339375, 475125, 610875, 791875, 855225, 1018125, 1425375, 2375625, 3054375, 4276125, 7126875, 21380625]

約数ペア:

[(1, 21380625), (3, 7126875), (5, 4276125), (7, 3054375), (9, 2375625), (15, 1425375), (21, 1018125), (25, 855225), (27, 791875), (35, 610875), (45, 475125), (63, 339375), (75, 285075), (105, 203625), (125, 171045), (135, 158375), (175, 122175), (181, 118125), (189, 113125), (225, 95025), (315, 67875), (375, 57015), (525, 40725), (543, 39375), (625, 34209), (675, 31675), (875, 24435), (905, 23625), (945, 22625), (1125, 19005), (1267, 16875), (1575, 13575), (1629, 13125), (1875, 11403), (2625, 8145), (2715, 7875), (3375, 6335), (3801, 5625), (4375, 4887), (4525, 4725)]