81820764

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 231547680

約数和(自身を除く): 149726916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 37, 38, 53, 57, 61, 74, 76, 106, 111, 114, 122, 148, 159, 171, 183, 212, 222, 228, 244, 318, 333, 342, 366, 444, 477, 549, 636, 666, 684, 703, 732, 954, 1007, 1098, 1159, 1332, 1406, 1908, 1961, 2014, 2109, 2196, 2257, 2318, 2812, 3021, 3233, 3477, 3922, 4028, 4218, 4514, 4636, 5883, 6042, 6327, 6466, 6771, 6954, 7844, 8436, 9028, 9063, 9699, 10431, 11766, 12084, 12654, 12932, 13542, 13908, 17649, 18126, 19398, 20313, 20862, 23532, 25308, 27084, 29097, 35298, 36252, 37259, 38796, 40626, 41724, 42883, 58194, 61427, 70596, 74518, 81252, 85766, 111777, 116388, 119621, 122854, 128649, 149036, 171532, 184281, 223554, 239242, 245708, 257298, 335331, 358863, 368562, 385947, 447108, 478484, 514596, 552843, 670662, 717726, 737124, 771894, 1076589, 1105686, 1341324, 1435452, 1543788, 2153178, 2211372, 2272799, 4306356, 4545598, 6818397, 9091196, 13636794, 20455191, 27273588, 40910382, 81820764]

約数ペア:

[(1, 81820764), (2, 40910382), (3, 27273588), (4, 20455191), (6, 13636794), (9, 9091196), (12, 6818397), (18, 4545598), (19, 4306356), (36, 2272799), (37, 2211372), (38, 2153178), (53, 1543788), (57, 1435452), (61, 1341324), (74, 1105686), (76, 1076589), (106, 771894), (111, 737124), (114, 717726), (122, 670662), (148, 552843), (159, 514596), (171, 478484), (183, 447108), (212, 385947), (222, 368562), (228, 358863), (244, 335331), (318, 257298), (333, 245708), (342, 239242), (366, 223554), (444, 184281), (477, 171532), (549, 149036), (636, 128649), (666, 122854), (684, 119621), (703, 116388), (732, 111777), (954, 85766), (1007, 81252), (1098, 74518), (1159, 70596), (1332, 61427), (1406, 58194), (1908, 42883), (1961, 41724), (2014, 40626), (2109, 38796), (2196, 37259), (2257, 36252), (2318, 35298), (2812, 29097), (3021, 27084), (3233, 25308), (3477, 23532), (3922, 20862), (4028, 20313), (4218, 19398), (4514, 18126), (4636, 17649), (5883, 13908), (6042, 13542), (6327, 12932), (6466, 12654), (6771, 12084), (6954, 11766), (7844, 10431), (8436, 9699), (9028, 9063)]