About the Number

221052780

221052779 ← → 221052781

2進数表記:1101001011001111111101101100

漢数字表記:二億二千百五万二千七百八十

素因数分解:

2 2 × 3 3 × 5 1 × 13 1 × 31489 1

素因数の和:31520
約数の個数: 96
約数和(自身を含む): 740644800
約数和(自身を除く): 519592020

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 90, 108, 117, 130, 135, 156, 180, 195, 234, 260, 270, 351, 390, 468, 540, 585, 702, 780, 1170, 1404, 1755, 2340, 3510, 7020, 31489, 62978, 94467, 125956, 157445, 188934, 283401, 314890, 377868, 409357, 472335, 566802, 629780, 818714, 850203, 944670, 1133604, 1228071, 1417005, 1637428, 1700406, 1889340, 2046785, 2456142, 2834010, 3400812, 3684213, 4093570, 4251015, 4912284, 5668020, 6140355, 7368426, 8187140, 8502030, 11052639, 12280710, 14736852, 17004060, 18421065, 22105278, 24561420, 36842130, 44210556, 55263195, 73684260, 110526390, 221052780]

約数ペア:
[(1, 221052780), (2, 110526390), (3, 73684260), (4, 55263195), (5, 44210556), (6, 36842130), (9, 24561420), (10, 22105278), (12, 18421065), (13, 17004060), (15, 14736852), (18, 12280710), (20, 11052639), (26, 8502030), (27, 8187140), (30, 7368426), (36, 6140355), (39, 5668020), (45, 4912284), (52, 4251015), (54, 4093570), (60, 3684213), (65, 3400812), (78, 2834010), (90, 2456142), (108, 2046785), (117, 1889340), (130, 1700406), (135, 1637428), (156, 1417005), (180, 1228071), (195, 1133604), (234, 944670), (260, 850203), (270, 818714), (351, 629780), (390, 566802), (468, 472335), (540, 409357), (585, 377868), (702, 314890), (780, 283401), (1170, 188934), (1404, 157445), (1755, 125956), (2340, 94467), (3510, 62978), (7020, 31489)]

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