About the Number

2181240

2181239 ← → 2181241

2進数表記:1000010100100001111000

漢数字表記:二百十八万千二百四十

素因数分解:

2 3 × 3 2 × 5 1 × 73 1 × 83 1

素因数の和:173
約数の個数: 96
約数和(自身を含む): 7272720
約数和(自身を除く): 5091480

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 73, 83, 90, 120, 146, 166, 180, 219, 249, 292, 332, 360, 365, 415, 438, 498, 584, 657, 664, 730, 747, 830, 876, 996, 1095, 1245, 1314, 1460, 1494, 1660, 1752, 1992, 2190, 2490, 2628, 2920, 2988, 3285, 3320, 3735, 4380, 4980, 5256, 5976, 6059, 6570, 7470, 8760, 9960, 12118, 13140, 14940, 18177, 24236, 26280, 29880, 30295, 36354, 48472, 54531, 60590, 72708, 90885, 109062, 121180, 145416, 181770, 218124, 242360, 272655, 363540, 436248, 545310, 727080, 1090620, 2181240]

約数ペア:
[(1, 2181240), (2, 1090620), (3, 727080), (4, 545310), (5, 436248), (6, 363540), (8, 272655), (9, 242360), (10, 218124), (12, 181770), (15, 145416), (18, 121180), (20, 109062), (24, 90885), (30, 72708), (36, 60590), (40, 54531), (45, 48472), (60, 36354), (72, 30295), (73, 29880), (83, 26280), (90, 24236), (120, 18177), (146, 14940), (166, 13140), (180, 12118), (219, 9960), (249, 8760), (292, 7470), (332, 6570), (360, 6059), (365, 5976), (415, 5256), (438, 4980), (498, 4380), (584, 3735), (657, 3320), (664, 3285), (730, 2988), (747, 2920), (830, 2628), (876, 2490), (996, 2190), (1095, 1992), (1245, 1752), (1314, 1660), (1460, 1494)]

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