About the Number

201221490

201221489 ← → 201221491

2進数表記:1011111111100110010101110010

漢数字表記:二億百二十二万千四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 137 1 × 173 1 × 283 1

素因数の和:603
約数の個数: 64
約数和(自身を含む): 490997376
約数和(自身を除く): 289775886

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 137, 173, 274, 283, 346, 411, 519, 566, 685, 822, 849, 865, 1038, 1370, 1415, 1698, 1730, 2055, 2595, 2830, 4110, 4245, 5190, 8490, 23701, 38771, 47402, 48959, 71103, 77542, 97918, 116313, 118505, 142206, 146877, 193855, 232626, 237010, 244795, 293754, 355515, 387710, 489590, 581565, 711030, 734385, 1163130, 1468770, 6707383, 13414766, 20122149, 33536915, 40244298, 67073830, 100610745, 201221490]

約数ペア:
[(1, 201221490), (2, 100610745), (3, 67073830), (5, 40244298), (6, 33536915), (10, 20122149), (15, 13414766), (30, 6707383), (137, 1468770), (173, 1163130), (274, 734385), (283, 711030), (346, 581565), (411, 489590), (519, 387710), (566, 355515), (685, 293754), (822, 244795), (849, 237010), (865, 232626), (1038, 193855), (1370, 146877), (1415, 142206), (1698, 118505), (1730, 116313), (2055, 97918), (2595, 77542), (2830, 71103), (4110, 48959), (4245, 47402), (5190, 38771), (8490, 23701)]

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