About the Number

221381640

221381639 ← → 221381641

2進数表記:1101001100100000010000001000

漢数字表記:二億二千百三十八万千六百四十

素因数分解:

2 3 × 3 3 × 5 1 × 204983 1

素因数の和:205003
約数の個数: 64
約数和(自身を含む): 737942400
約数和(自身を除く): 516560760

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 204983, 409966, 614949, 819932, 1024915, 1229898, 1639864, 1844847, 2049830, 2459796, 3074745, 3689694, 4099660, 4919592, 5534541, 6149490, 7379388, 8199320, 9224235, 11069082, 12298980, 14758776, 18448470, 22138164, 24597960, 27672705, 36896940, 44276328, 55345410, 73793880, 110690820, 221381640]

約数ペア:
[(1, 221381640), (2, 110690820), (3, 73793880), (4, 55345410), (5, 44276328), (6, 36896940), (8, 27672705), (9, 24597960), (10, 22138164), (12, 18448470), (15, 14758776), (18, 12298980), (20, 11069082), (24, 9224235), (27, 8199320), (30, 7379388), (36, 6149490), (40, 5534541), (45, 4919592), (54, 4099660), (60, 3689694), (72, 3074745), (90, 2459796), (108, 2049830), (120, 1844847), (135, 1639864), (180, 1229898), (216, 1024915), (270, 819932), (360, 614949), (540, 409966), (1080, 204983)]

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