About the Number

121572390

121572389 ← → 121572391

2進数表記:111001111110000110000100110

漢数字表記:一億二千百五十七万二千三百九十

素因数分解:

2 1 × 3 1 × 5 1 × 31 1 × 61 1 × 2143 1

素因数の和:2245
約数の個数: 64
約数和(自身を含む): 306266112
約数和(自身を除く): 184693722

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 31, 61, 62, 93, 122, 155, 183, 186, 305, 310, 366, 465, 610, 915, 930, 1830, 1891, 2143, 3782, 4286, 5673, 6429, 9455, 10715, 11346, 12858, 18910, 21430, 28365, 32145, 56730, 64290, 66433, 130723, 132866, 199299, 261446, 332165, 392169, 398598, 653615, 664330, 784338, 996495, 1307230, 1960845, 1992990, 3921690, 4052413, 8104826, 12157239, 20262065, 24314478, 40524130, 60786195, 121572390]

約数ペア:
[(1, 121572390), (2, 60786195), (3, 40524130), (5, 24314478), (6, 20262065), (10, 12157239), (15, 8104826), (30, 4052413), (31, 3921690), (61, 1992990), (62, 1960845), (93, 1307230), (122, 996495), (155, 784338), (183, 664330), (186, 653615), (305, 398598), (310, 392169), (366, 332165), (465, 261446), (610, 199299), (915, 132866), (930, 130723), (1830, 66433), (1891, 64290), (2143, 56730), (3782, 32145), (4286, 28365), (5673, 21430), (6429, 18910), (9455, 12858), (10715, 11346)]

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