161789580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3581}}^1$

素因数の和:3847

約数の個数: 72

約数和(自身を含む): 492854544

約数和(自身を除く): 331064964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 502, 753, 1004, 1255, 1506, 2259, 2510, 3012, 3581, 3765, 4518, 5020, 7162, 7530, 9036, 10743, 11295, 14324, 15060, 17905, 21486, 22590, 32229, 35810, 42972, 45180, 53715, 64458, 71620, 107430, 128916, 161145, 214860, 322290, 644580, 898831, 1797662, 2696493, 3595324, 4494155, 5392986, 8089479, 8988310, 10785972, 13482465, 16178958, 17976620, 26964930, 32357916, 40447395, 53929860, 80894790, 161789580]

約数ペア:

[(1, 161789580), (2, 80894790), (3, 53929860), (4, 40447395), (5, 32357916), (6, 26964930), (9, 17976620), (10, 16178958), (12, 13482465), (15, 10785972), (18, 8988310), (20, 8089479), (30, 5392986), (36, 4494155), (45, 3595324), (60, 2696493), (90, 1797662), (180, 898831), (251, 644580), (502, 322290), (753, 214860), (1004, 161145), (1255, 128916), (1506, 107430), (2259, 71620), (2510, 64458), (3012, 53715), (3581, 45180), (3765, 42972), (4518, 35810), (5020, 32229), (7162, 22590), (7530, 21486), (9036, 17905), (10743, 15060), (11295, 14324)]