About the Number

29128720

29128719 ← → 29128721

2進数表記:1101111000111100000010000

漢数字表記:二千九百十二万八千七百二十

素因数分解:

2 4 × 5 1 × 47 1 × 61 1 × 127 1

素因数の和:248
約数の個数: 80
約数和(自身を含む): 70852608
約数和(自身を除く): 41723888

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 61, 80, 94, 122, 127, 188, 235, 244, 254, 305, 376, 470, 488, 508, 610, 635, 752, 940, 976, 1016, 1220, 1270, 1880, 2032, 2440, 2540, 2867, 3760, 4880, 5080, 5734, 5969, 7747, 10160, 11468, 11938, 14335, 15494, 22936, 23876, 28670, 29845, 30988, 38735, 45872, 47752, 57340, 59690, 61976, 77470, 95504, 114680, 119380, 123952, 154940, 229360, 238760, 309880, 364109, 477520, 619760, 728218, 1456436, 1820545, 2912872, 3641090, 5825744, 7282180, 14564360, 29128720]

約数ペア:
[(1, 29128720), (2, 14564360), (4, 7282180), (5, 5825744), (8, 3641090), (10, 2912872), (16, 1820545), (20, 1456436), (40, 728218), (47, 619760), (61, 477520), (80, 364109), (94, 309880), (122, 238760), (127, 229360), (188, 154940), (235, 123952), (244, 119380), (254, 114680), (305, 95504), (376, 77470), (470, 61976), (488, 59690), (508, 57340), (610, 47752), (635, 45872), (752, 38735), (940, 30988), (976, 29845), (1016, 28670), (1220, 23876), (1270, 22936), (1880, 15494), (2032, 14335), (2440, 11938), (2540, 11468), (2867, 10160), (3760, 7747), (4880, 5969), (5080, 5734)]

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