81963260

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 184321536

約数和(自身を除く): 102358276

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 61, 92, 115, 122, 127, 230, 244, 254, 305, 460, 508, 529, 610, 635, 1058, 1220, 1270, 1403, 2116, 2540, 2645, 2806, 2921, 5290, 5612, 5842, 7015, 7747, 10580, 11684, 14030, 14605, 15494, 28060, 29210, 30988, 32269, 38735, 58420, 64538, 67183, 77470, 129076, 134366, 154940, 161345, 178181, 268732, 322690, 335915, 356362, 645380, 671830, 712724, 890905, 1343660, 1781810, 3563620, 4098163, 8196326, 16392652, 20490815, 40981630, 81963260]

約数ペア:

[(1, 81963260), (2, 40981630), (4, 20490815), (5, 16392652), (10, 8196326), (20, 4098163), (23, 3563620), (46, 1781810), (61, 1343660), (92, 890905), (115, 712724), (122, 671830), (127, 645380), (230, 356362), (244, 335915), (254, 322690), (305, 268732), (460, 178181), (508, 161345), (529, 154940), (610, 134366), (635, 129076), (1058, 77470), (1220, 67183), (1270, 64538), (1403, 58420), (2116, 38735), (2540, 32269), (2645, 30988), (2806, 29210), (2921, 28060), (5290, 15494), (5612, 14605), (5842, 14030), (7015, 11684), (7747, 10580)]