About the Number

218901990

218901989 ← → 218901991

2進数表記:1101000011000010110111100110

漢数字表記:二億千八百九十万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 37 1 × 199 1 × 991 1

素因数の和:1237
約数の個数: 64
約数和(自身を含む): 542822400
約数和(自身を除く): 323920410

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 37, 74, 111, 185, 199, 222, 370, 398, 555, 597, 991, 995, 1110, 1194, 1982, 1990, 2973, 2985, 4955, 5946, 5970, 7363, 9910, 14726, 14865, 22089, 29730, 36667, 36815, 44178, 73334, 73630, 110001, 110445, 183335, 197209, 220002, 220890, 366670, 394418, 550005, 591627, 986045, 1100010, 1183254, 1972090, 2958135, 5916270, 7296733, 14593466, 21890199, 36483665, 43780398, 72967330, 109450995, 218901990]

約数ペア:
[(1, 218901990), (2, 109450995), (3, 72967330), (5, 43780398), (6, 36483665), (10, 21890199), (15, 14593466), (30, 7296733), (37, 5916270), (74, 2958135), (111, 1972090), (185, 1183254), (199, 1100010), (222, 986045), (370, 591627), (398, 550005), (555, 394418), (597, 366670), (991, 220890), (995, 220002), (1110, 197209), (1194, 183335), (1982, 110445), (1990, 110001), (2973, 73630), (2985, 73334), (4955, 44178), (5946, 36815), (5970, 36667), (7363, 29730), (9910, 22089), (14726, 14865)]

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