About the Number

220688380

220688379 ← → 220688381

2進数表記:1101001001110110111111111100

漢数字表記:二億二千六十八万八千三百八十

素因数分解:

2 2 × 5 1 × 11 1 × 31 1 × 32359 1

素因数の和:32410
約数の個数: 48
約数和(自身を含む): 521902080
約数和(自身を除く): 301213700

約数列:
[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 32359, 64718, 129436, 161795, 323590, 355949, 647180, 711898, 1003129, 1423796, 1779745, 2006258, 3559490, 4012516, 5015645, 7118980, 10031290, 11034419, 20062580, 22068838, 44137676, 55172095, 110344190, 220688380]

約数ペア:
[(1, 220688380), (2, 110344190), (4, 55172095), (5, 44137676), (10, 22068838), (11, 20062580), (20, 11034419), (22, 10031290), (31, 7118980), (44, 5015645), (55, 4012516), (62, 3559490), (110, 2006258), (124, 1779745), (155, 1423796), (220, 1003129), (310, 711898), (341, 647180), (620, 355949), (682, 323590), (1364, 161795), (1705, 129436), (3410, 64718), (6820, 32359)]

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