31480956

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{491}}^1$

素因数の和:651

約数の個数: 72

約数和(自身を含む): 86499504

約数和(自身を除く): 55018548

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 137, 156, 234, 274, 411, 468, 491, 548, 822, 982, 1233, 1473, 1644, 1781, 1964, 2466, 2946, 3562, 4419, 4932, 5343, 5892, 6383, 7124, 8838, 10686, 12766, 16029, 17676, 19149, 21372, 25532, 32058, 38298, 57447, 64116, 67267, 76596, 114894, 134534, 201801, 229788, 269068, 403602, 605403, 807204, 874471, 1210806, 1748942, 2421612, 2623413, 3497884, 5246826, 7870239, 10493652, 15740478, 31480956]

約数ペア:

[(1, 31480956), (2, 15740478), (3, 10493652), (4, 7870239), (6, 5246826), (9, 3497884), (12, 2623413), (13, 2421612), (18, 1748942), (26, 1210806), (36, 874471), (39, 807204), (52, 605403), (78, 403602), (117, 269068), (137, 229788), (156, 201801), (234, 134534), (274, 114894), (411, 76596), (468, 67267), (491, 64116), (548, 57447), (822, 38298), (982, 32058), (1233, 25532), (1473, 21372), (1644, 19149), (1781, 17676), (1964, 16029), (2466, 12766), (2946, 10686), (3562, 8838), (4419, 7124), (4932, 6383), (5343, 5892)]