About the Number

991230

991229 ← → 991231

2進数表記:11110001111111111110

漢数字表記:九十九万千二百三十

素因数分解:

2 1 × 3 1 × 5 1 × 19 1 × 37 1 × 47 1

素因数の和:113
約数の個数: 64
約数和(自身を含む): 2626560
約数和(自身を除く): 1635330

約数列:
[1, 2, 3, 5, 6, 10, 15, 19, 30, 37, 38, 47, 57, 74, 94, 95, 111, 114, 141, 185, 190, 222, 235, 282, 285, 370, 470, 555, 570, 703, 705, 893, 1110, 1406, 1410, 1739, 1786, 2109, 2679, 3478, 3515, 4218, 4465, 5217, 5358, 7030, 8695, 8930, 10434, 10545, 13395, 17390, 21090, 26085, 26790, 33041, 52170, 66082, 99123, 165205, 198246, 330410, 495615, 991230]

約数ペア:
[(1, 991230), (2, 495615), (3, 330410), (5, 198246), (6, 165205), (10, 99123), (15, 66082), (19, 52170), (30, 33041), (37, 26790), (38, 26085), (47, 21090), (57, 17390), (74, 13395), (94, 10545), (95, 10434), (111, 8930), (114, 8695), (141, 7030), (185, 5358), (190, 5217), (222, 4465), (235, 4218), (282, 3515), (285, 3478), (370, 2679), (470, 2109), (555, 1786), (570, 1739), (703, 1410), (705, 1406), (893, 1110)]

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