78686680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 193039200

約数和(自身を除く): 114352520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 89, 92, 115, 124, 155, 178, 184, 230, 248, 310, 356, 445, 460, 620, 712, 713, 890, 920, 961, 1240, 1426, 1780, 1922, 2047, 2759, 2852, 3560, 3565, 3844, 4094, 4805, 5518, 5704, 7130, 7688, 8188, 9610, 10235, 11036, 13795, 14260, 16376, 19220, 20470, 22072, 22103, 27590, 28520, 38440, 40940, 44206, 55180, 63457, 81880, 85529, 88412, 110360, 110515, 126914, 171058, 176824, 221030, 253828, 317285, 342116, 427645, 442060, 507656, 634570, 684232, 855290, 884120, 1269140, 1710580, 1967167, 2538280, 3421160, 3934334, 7868668, 9835835, 15737336, 19671670, 39343340, 78686680]

約数ペア:

[(1, 78686680), (2, 39343340), (4, 19671670), (5, 15737336), (8, 9835835), (10, 7868668), (20, 3934334), (23, 3421160), (31, 2538280), (40, 1967167), (46, 1710580), (62, 1269140), (89, 884120), (92, 855290), (115, 684232), (124, 634570), (155, 507656), (178, 442060), (184, 427645), (230, 342116), (248, 317285), (310, 253828), (356, 221030), (445, 176824), (460, 171058), (620, 126914), (712, 110515), (713, 110360), (890, 88412), (920, 85529), (961, 81880), (1240, 63457), (1426, 55180), (1780, 44206), (1922, 40940), (2047, 38440), (2759, 28520), (2852, 27590), (3560, 22103), (3565, 22072), (3844, 20470), (4094, 19220), (4805, 16376), (5518, 14260), (5704, 13795), (7130, 11036), (7688, 10235), (8188, 9610)]