81400250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 163762560

約数和(自身を除く): 82362310

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 107, 125, 170, 179, 214, 250, 358, 425, 535, 850, 895, 1070, 1790, 1819, 2125, 2675, 3043, 3638, 4250, 4475, 5350, 6086, 8950, 9095, 13375, 15215, 18190, 19153, 22375, 26750, 30430, 38306, 44750, 45475, 76075, 90950, 95765, 152150, 191530, 227375, 325601, 380375, 454750, 478825, 651202, 760750, 957650, 1628005, 2394125, 3256010, 4788250, 8140025, 16280050, 40700125, 81400250]

約数ペア:

[(1, 81400250), (2, 40700125), (5, 16280050), (10, 8140025), (17, 4788250), (25, 3256010), (34, 2394125), (50, 1628005), (85, 957650), (107, 760750), (125, 651202), (170, 478825), (179, 454750), (214, 380375), (250, 325601), (358, 227375), (425, 191530), (535, 152150), (850, 95765), (895, 90950), (1070, 76075), (1790, 45475), (1819, 44750), (2125, 38306), (2675, 30430), (3043, 26750), (3638, 22375), (4250, 19153), (4475, 18190), (5350, 15215), (6086, 13375), (8950, 9095)]