181691720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:447

約数の個数: 128

約数和(自身を含む): 494553600

約数和(自身を除く): 312861880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 89, 92, 115, 140, 161, 178, 184, 230, 280, 317, 322, 356, 445, 460, 623, 634, 644, 712, 805, 890, 920, 1246, 1268, 1288, 1585, 1610, 1780, 2047, 2219, 2492, 2536, 3115, 3170, 3220, 3560, 4094, 4438, 4984, 6230, 6340, 6440, 7291, 8188, 8876, 10235, 11095, 12460, 12680, 14329, 14582, 16376, 17752, 20470, 22190, 24920, 28213, 28658, 29164, 36455, 40940, 44380, 51037, 56426, 57316, 58328, 71645, 72910, 81880, 88760, 102074, 112852, 114632, 141065, 143290, 145820, 197491, 204148, 225704, 255185, 282130, 286580, 291640, 394982, 408296, 510370, 564260, 573160, 648899, 789964, 987455, 1020740, 1128520, 1297798, 1579928, 1974910, 2041480, 2595596, 3244495, 3949820, 4542293, 5191192, 6488990, 7899640, 9084586, 12977980, 18169172, 22711465, 25955960, 36338344, 45422930, 90845860, 181691720]

約数ペア:

[(1, 181691720), (2, 90845860), (4, 45422930), (5, 36338344), (7, 25955960), (8, 22711465), (10, 18169172), (14, 12977980), (20, 9084586), (23, 7899640), (28, 6488990), (35, 5191192), (40, 4542293), (46, 3949820), (56, 3244495), (70, 2595596), (89, 2041480), (92, 1974910), (115, 1579928), (140, 1297798), (161, 1128520), (178, 1020740), (184, 987455), (230, 789964), (280, 648899), (317, 573160), (322, 564260), (356, 510370), (445, 408296), (460, 394982), (623, 291640), (634, 286580), (644, 282130), (712, 255185), (805, 225704), (890, 204148), (920, 197491), (1246, 145820), (1268, 143290), (1288, 141065), (1585, 114632), (1610, 112852), (1780, 102074), (2047, 88760), (2219, 81880), (2492, 72910), (2536, 71645), (3115, 58328), (3170, 57316), (3220, 56426), (3560, 51037), (4094, 44380), (4438, 40940), (4984, 36455), (6230, 29164), (6340, 28658), (6440, 28213), (7291, 24920), (8188, 22190), (8876, 20470), (10235, 17752), (11095, 16376), (12460, 14582), (12680, 14329)]