About the Number

27991000

27990999 ← → 27991001

2進数表記:1101010110001101111011000

漢数字表記:二千七百九十九万千

素因数分解:

2 3 × 5 3 × 23 1 × 1217 1

素因数の和:1261
約数の個数: 64
約数和(自身を含む): 68402880
約数和(自身を除く): 40411880

約数列:
[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 184, 200, 230, 250, 460, 500, 575, 920, 1000, 1150, 1217, 2300, 2434, 2875, 4600, 4868, 5750, 6085, 9736, 11500, 12170, 23000, 24340, 27991, 30425, 48680, 55982, 60850, 111964, 121700, 139955, 152125, 223928, 243400, 279910, 304250, 559820, 608500, 699775, 1119640, 1217000, 1399550, 2799100, 3498875, 5598200, 6997750, 13995500, 27991000]

約数ペア:
[(1, 27991000), (2, 13995500), (4, 6997750), (5, 5598200), (8, 3498875), (10, 2799100), (20, 1399550), (23, 1217000), (25, 1119640), (40, 699775), (46, 608500), (50, 559820), (92, 304250), (100, 279910), (115, 243400), (125, 223928), (184, 152125), (200, 139955), (230, 121700), (250, 111964), (460, 60850), (500, 55982), (575, 48680), (920, 30425), (1000, 27991), (1150, 24340), (1217, 23000), (2300, 12170), (2434, 11500), (2875, 9736), (4600, 6085), (4868, 5750)]

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