81645060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{557}}^1$

素因数の和:925

約数の個数: 96

約数和(自身を含む): 262483200

約数和(自身を除く): 180838140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 349, 420, 557, 698, 1047, 1114, 1396, 1671, 1745, 2094, 2228, 2443, 2785, 3342, 3490, 3899, 4188, 4886, 5235, 5570, 6684, 6980, 7329, 7798, 8355, 9772, 10470, 11140, 11697, 12215, 14658, 15596, 16710, 19495, 20940, 23394, 24430, 29316, 33420, 36645, 38990, 46788, 48860, 58485, 73290, 77980, 116970, 146580, 194393, 233940, 388786, 583179, 777572, 971965, 1166358, 1360751, 1943930, 2332716, 2721502, 2915895, 3887860, 4082253, 5443004, 5831790, 6803755, 8164506, 11663580, 13607510, 16329012, 20411265, 27215020, 40822530, 81645060]

約数ペア:

[(1, 81645060), (2, 40822530), (3, 27215020), (4, 20411265), (5, 16329012), (6, 13607510), (7, 11663580), (10, 8164506), (12, 6803755), (14, 5831790), (15, 5443004), (20, 4082253), (21, 3887860), (28, 2915895), (30, 2721502), (35, 2332716), (42, 1943930), (60, 1360751), (70, 1166358), (84, 971965), (105, 777572), (140, 583179), (210, 388786), (349, 233940), (420, 194393), (557, 146580), (698, 116970), (1047, 77980), (1114, 73290), (1396, 58485), (1671, 48860), (1745, 46788), (2094, 38990), (2228, 36645), (2443, 33420), (2785, 29316), (3342, 24430), (3490, 23394), (3899, 20940), (4188, 19495), (4886, 16710), (5235, 15596), (5570, 14658), (6684, 12215), (6980, 11697), (7329, 11140), (7798, 10470), (8355, 9772)]