80155625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 40

約数和(自身を含む): 111339360

約数和(自身を除く): 31183735

約数列:

[1, 5, 11, 25, 55, 89, 125, 131, 275, 445, 625, 655, 979, 1375, 1441, 2225, 3275, 4895, 6875, 7205, 11125, 11659, 16375, 24475, 36025, 55625, 58295, 81875, 122375, 128249, 180125, 291475, 611875, 641245, 900625, 1457375, 3206225, 7286875, 16031125, 80155625]

約数ペア:

[(1, 80155625), (5, 16031125), (11, 7286875), (25, 3206225), (55, 1457375), (89, 900625), (125, 641245), (131, 611875), (275, 291475), (445, 180125), (625, 128249), (655, 122375), (979, 81875), (1375, 58295), (1441, 55625), (2225, 36025), (3275, 24475), (4895, 16375), (6875, 11659), (7205, 11125)]