About the Number

121940820

121940819 ← → 121940821

2進数表記:111010001001010101101010100

漢数字表記:一億二千百九十四万八百二十

素因数分解:

2 2 × 3 2 × 5 1 × 251 1 × 2699 1

素因数の和:2965
約数の個数: 72
約数和(自身を含む): 371498400
約数和(自身を除く): 249557580

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 502, 753, 1004, 1255, 1506, 2259, 2510, 2699, 3012, 3765, 4518, 5020, 5398, 7530, 8097, 9036, 10796, 11295, 13495, 15060, 16194, 22590, 24291, 26990, 32388, 40485, 45180, 48582, 53980, 80970, 97164, 121455, 161940, 242910, 485820, 677449, 1354898, 2032347, 2709796, 3387245, 4064694, 6097041, 6774490, 8129388, 10161735, 12194082, 13548980, 20323470, 24388164, 30485205, 40646940, 60970410, 121940820]

約数ペア:
[(1, 121940820), (2, 60970410), (3, 40646940), (4, 30485205), (5, 24388164), (6, 20323470), (9, 13548980), (10, 12194082), (12, 10161735), (15, 8129388), (18, 6774490), (20, 6097041), (30, 4064694), (36, 3387245), (45, 2709796), (60, 2032347), (90, 1354898), (180, 677449), (251, 485820), (502, 242910), (753, 161940), (1004, 121455), (1255, 97164), (1506, 80970), (2259, 53980), (2510, 48582), (2699, 45180), (3012, 40485), (3765, 32388), (4518, 26990), (5020, 24291), (5398, 22590), (7530, 16194), (8097, 15060), (9036, 13495), (10796, 11295)]

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