About the Number

221988990

221988989 ← → 221988991

2進数表記:1101001110110100100001111110

漢数字表記:二億二千百九十八万八千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 47 1 × 313 1 × 503 1

素因数の和:873
約数の個数: 64
約数和(自身を含む): 546932736
約数和(自身を除く): 324943746

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 47, 94, 141, 235, 282, 313, 470, 503, 626, 705, 939, 1006, 1410, 1509, 1565, 1878, 2515, 3018, 3130, 4695, 5030, 7545, 9390, 14711, 15090, 23641, 29422, 44133, 47282, 70923, 73555, 88266, 118205, 141846, 147110, 157439, 220665, 236410, 314878, 354615, 441330, 472317, 709230, 787195, 944634, 1574390, 2361585, 4723170, 7399633, 14799266, 22198899, 36998165, 44397798, 73996330, 110994495, 221988990]

約数ペア:
[(1, 221988990), (2, 110994495), (3, 73996330), (5, 44397798), (6, 36998165), (10, 22198899), (15, 14799266), (30, 7399633), (47, 4723170), (94, 2361585), (141, 1574390), (235, 944634), (282, 787195), (313, 709230), (470, 472317), (503, 441330), (626, 354615), (705, 314878), (939, 236410), (1006, 220665), (1410, 157439), (1509, 147110), (1565, 141846), (1878, 118205), (2515, 88266), (3018, 73555), (3130, 70923), (4695, 47282), (5030, 44133), (7545, 29422), (9390, 23641), (14711, 15090)]

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